Chemical compounds derived from acids by the elimination of a molecule of water.
Compounds used extensively as acetylation, oxidation and dehydrating agents and in the modification of proteins and enzymes.
Phthalic acid anhydrides. Can be substituted on any carbon atom. Used extensively in industry and as a reagent in the acylation of amino- and hydroxyl groups.
Used in copolymerization reactions, in the Diels-Alder(diene)synthesis, in the preparation of resins, pharmaceuticals and agricultural chemicals. It is a powerful irritant and causes burns.
A subclass of anhydrides with the general structure of dihydrofurandione. They can be substituted on any carbon atom. They modify and inhibit proteins and enzymes and are used in the acylation of amino- and hydroxyl groups.
Methylmaleic anhydrides.
Polymeric resins derived from OXIRANES and characterized by strength and thermosetting properties. Epoxy resins are often used as dental materials.
Derivatives of acetic acid with one or more fluorines attached. They are almost odorless, difficult to detect chemically, and very stable. The acid itself, as well as the derivatives that are broken down in the body to the acid, are highly toxic substances, behaving as convulsant poisons with a delayed action. (From Miall's Dictionary of Chemistry, 5th ed)
Aconitic acid is a naturally occurring organic acid that has been used in the past as a component of some medications, but its use is now generally avoided due to its toxic effects.
Maleates are a class of organic compounds that are used in various medical applications, including as a preservative in injectable medications and as a chelating agent to remove heavy metals from the body.
Preservative for wines, soft drinks, and fruit juices and a gentle esterifying agent.
Oligosaccharides containing two monosaccharide units linked by a glycosidic bond.
A very strong halogenated derivative of acetic acid. It is used in acid catalyzed reactions, especially those where an ester is cleaved in peptide synthesis.
A group of compounds that has the general structure of a dicarboxylic acid-substituted benzene ring. The ortho-isomer is used in dye manufacture. (Dorland, 28th ed)
Copolymer of divinyl ether and maleic anhydride that acts as an immunostimulant with antineoplastic and anti-infective properties. It is used in combination with other antineoplastic agents.
A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
Enzymes which transfer coenzyme A moieties from acyl- or acetyl-CoA to various carboxylic acceptors forming a thiol ester. Enzymes in this group are instrumental in ketone body metabolism and utilization of acetoacetate in mitochondria. EC 2.8.3.
The composition, conformation, and properties of atoms and molecules, and their reaction and interaction processes.
A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.
Compounds with a 5-membered ring of four carbons and an oxygen. They are aromatic heterocycles. The reduced form is tetrahydrofuran.
A macrolide antibiotic of the oligomycin group, obtained from Streptomyces rutgersensis. It is used in cytochemistry as a tool to inhibit various ATPases and to uncouple oxidative phosphorylation from electron transport and also clinically as an antifungal agent.
Norbornanes are a class of cyclic hydrocarbons that are not found naturally in the human body and are not used in medicine.
A genus of gram-positive bacteria in the family Lachnospiraceae that inhabits the RUMEN; LARGE INTESTINE; and CECUM of MAMMALS.
The addition of an organic acid radical into a molecule.
Benzene derivatives are chemical compounds derived from benzene, a common organic chemical, that have medical applications.
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.
Derivatives of SUCCINIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain a 1,4-carboxy terminated aliphatic structure.
Mercaptoethylamines are a class of compounds containing a thiol (-SH) group attached to an ethylamine (-NH2) group, with potential applications in medicine as antioxidants, anti-inflammatory agents, and treatments for neurological disorders.
Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)
Derivatives of formic acids. Included under this heading are a broad variety of acid forms, salts, esters, and amides that are formed with a single carbon carboxy group.

Activity in saline of phthalylated or succinylated derivatives of mycobacterial water-soluble adjuvant. (1/121)

A water-soluble fraction (WSA) of the cell wall can substitute for mycobacterial cells in Freund complete adjuvant. However, when WSA is administered in saline instead of in a water-in-oil emulsion, its adjuvant activity is very weak, and under certain experimental conditions it can even inhibit the humoral immune response. The data reported in the present study show that after treatment by phthalic or succinic anhydride the adjuvant activity of WSA was markedly changed, since high levels of circulating antibodies were produced when these derivatives were administered with an antigen in an aqueous medium. Moreover, the antigenic determinants of WSA were modified and acylated WSA had no tuberculin-like activity.  (+info)

Prevention of occupational allergy caused by exposure to acid anhydrides. (2/121)

This paper focuses on the prevention of IgE-mediated symptoms of the eyes and airways caused by exposure to acid anhydrides in the workplace. Acid anhydrides are widely used in the production of alkyd resins and as curing agents for epoxy resins. Heavy exposure to acid anhydrides causes severe irritation. However, reports of direct irritation of mucous membranes or skin are rare in recent years, since a package of multiple engineering controls has been introduced to reduce exposure. On the other hand, acid anhydrides are well-known industrial inhalant sensitizers and can cause occupational allergy even at very low exposure intensities. Therefore, safe use in industry demands both control of the level of exposure causing allergic diseases in the workshop and programmes for prevention of occupational allergy.  (+info)

Mass spectrometric analysis of platelet-activating factor after isolation by solid-phase extraction and direct derivatization with pentafluorobenzoic anhydride. (3/121)

Platelet-activating factor is the term used to denote a class of extremely potent lipid mediators that consist predominantly of 1-O-alkyl- and 1-O-acyl-2-acetyl-sn-glycero-3-phosphocholines. A method has been devised for rapid isolation of these acetylated phospholipids by solid-phase extraction prior to direct derivatization with pentafluorobenzoic anhydride and analysis by gas chromatography (GC)/electron-capture mass spectrometry. Recovery through the entire method (lipid isolation, derivatization, and purification) typically ranged from 70% to 85%. Using the direct derivatization procedure described here, the practical limit of detection for each of the standard alkyl- and acyl-platelet-activating factor homologs was 1 fmol injected into the GC. Results from the application of the method to the analysis of alkyl and acyl homologs of platelet-activating factor isolated from stimulated human umbilical vein endothelial cells are presented, exhibiting excellent accuracy and precision for a wide range of tissue levels of this class of potent autacoids.  (+info)

GCD quantitation of opiates as propionyl derivatives in blood. (4/121)

We describe a method using a gas chromatograph with electron ionization detection (GCD) for the simultaneous determination of morphine, codeine, 6-monoacetylmorphine, ethylmorphine, and dihydrocodeine in blood. The method employs propionic anhydride in the presence of triethylamine to propionylate free hydroxyl groups of the opiates in blood. The quantitation is achieved by using GCD with selected ion monitoring of the two most characteristic ions for each analyte. The quantitation limit was 0.01 mg/L and the linearity was 0.01-10 mg/L for dihydrocodeine, ethylmorphine, and 6-monoacetylmorphine. For the other investigated opiates, the quantitation limit was 0.025 mg/L and linearity was 0.025-10 mg/L. The intraday relative standard deviation (RSD) varied from 7.2 to 10% at the 0.5 mg/L level, and the day-to-day RSDs varied from 7.5 to 11% at the 0.85 mg/L level.  (+info)

Risk factors for bronchial hyperresponsiveness in workers exposed to acid anhydrides. (5/121)

Risk factors for bronchial hyperresponsiveness have previously been established in the general community. In settings where occupational asthma is a risk, it has not been established whether occupational sensitization or measures of exposure are important. Bronchial responsiveness to histamine was measured in a cohort of 506 workers exposed to acid anhydrides. Skin-prick tests were performed with conjugates of phthalic, maleic and trimellitic anhydride with human serum albumin and with common inhalant allergens. Employment and smoking histories were recorded. Occupational exposure was measured using personal air samplers and estimates of past exposure made by retrospective exposure assessment. Three hundred and seventy workers (73%) had bronchial responsiveness measured (median age 39 yrs, range 18-77) and 46 (12%) of these were hyperresponsive (provocative dose causing a 20% fall in forced expiratory volume in one second (FEV1; PD20) < or = 8 micromol). Twelve (3%) of these responsive workers had a skin-prick test reaction to an acid anhydride conjugate, 124 (34%) to a common inhalant allergen, and 148 (40%) were current smokers. Multivariate analysis showed that occupational sensitization, sensitization to a common inhalant allergen, age, and pack-years of smoking were independent risk factors for bronchial hyperresponsiveness. Of these only occupational sensitization was completely independent of baseline FEV1. It is concluded that sensitization to acid anhydrides is a significant risk factor for bronchial hyperresponsiveness. However, measures of personal acid anhydride exposure were not associated with bronchial hyperresponsiveness.  (+info)

New hemisynthetic manoyl oxide derivatives with antimicrobial activity. (6/121)

The synthesis and antimicrobial activity of ten labdane-type diterpenes derived from ent-3-beta-hydroxy-13-epi-manoyl oxide (ribenol) is reported. The chloroethyl carbamidic ester 9 showed the strongest antimicrobial activity against all the tested gram (+), gram (-) bacteria and pathogenic fungi. Moreover, the glycoside 11 exhibited an interesting activity against the three tested fungi.  (+info)

The chemical modification of alpha-chymotrypsin with both hydrophobic and hydrophilic compounds stabilizes the enzyme against denaturation in water-organic media. (7/121)

We considered alpha-chymotrypsin (CT) in homogeneous water-organic media as a model system to examine the influence of enzyme chemical modification with hydrophilic and hydrophobic substances on its stability, activity and structure. Both types of modifying agents may lead to considerable stabilization of the enzyme in water-ethanol and water-DMF mixtures: (i) the range of organic cosolvent concentration at which enzyme activity (Vm) is at least 100% of its initial value is broadened and (ii) the range of organic cosolvent concentration at which the residual enzyme activity is observed is increased. We found that for both types of modification the stabilization effect can be correlated with the changes in protein surface hydrophobicity/hydrophilicity brought about by the modification. Circular dichroism studies indicated that the effects of these two types of modification on CT structure and its behavior in water-ethanol mixtures are different. Differential scanning calorimetry studies revealed that after modification two or three fractions or domains, differing in their stability, can be resolved. The least stable fractions (or domains) have properties similar to native CT.  (+info)

Unmasking of histone amino groups in chromatin at high pH. (8/121)

The reactivity of the amino groups of histones in chromatin towards acetic anhydride was determined as a function of pH. In the pH range 7-10 the vast majority of amino groups in all five histones are buried. However, at higher pH values some of the histone amino groups become exposed, and the higher the lysine:arginine ratio for the histone the greater was the degree of unmasking observed. At pH 11.8 histone I appears to be completely dissociated, histones IIB1 and IIb2 have approx. 55% of the amino groups unmasked, and histones III and IV have approx. 25% of the amino groups unmasked.  (+info)

In the medical field, anhydrides refer to compounds that do not contain water molecules. Anhydrides can be found in various forms, including organic and inorganic compounds. One example of an anhydride in the medical field is acetylsalicylic acid, also known as aspirin. Aspirin is an organic anhydride that is commonly used as a pain reliever and anti-inflammatory medication. Another example of an anhydride in the medical field is sulfuric acid, which is an inorganic anhydride. Sulfuric acid is used in various medical applications, including as a preservative for vaccines and as a component in some medications. Overall, anhydrides play important roles in the medical field and are used in a variety of applications, from pain relief to vaccine preservation.

Acetic anhydride is a chemical compound with the formula CH3COOCO2H. It is a colorless, oily liquid with a strong, unpleasant smell. In the medical field, acetic anhydride is used as a reagent in the synthesis of various drugs and other chemical compounds. It is also used as a local anesthetic and as an antiseptic. However, it is important to note that acetic anhydride is highly toxic and can cause serious harm if not used properly. It is therefore important to use it only under the supervision of a qualified healthcare professional.

Phthalic anhydrides are a class of organic compounds that are commonly used as intermediates in the production of various chemicals, including plastics, dyes, and pharmaceuticals. In the medical field, phthalic anhydrides are used as starting materials for the synthesis of a variety of drugs and other therapeutic agents. One example of a drug that is derived from phthalic anhydrides is diethyl phthalate (DEP), which is used as a solvent and plasticizer in medical devices and pharmaceuticals. DEP has been shown to have estrogenic effects in animal studies, which has raised concerns about its potential impact on human health. Other phthalic anhydrides that are used in the medical field include isophthalic anhydride, which is used as a starting material for the synthesis of certain antibiotics, and terephthalic anhydride, which is used in the production of resins and plastics that are used in medical devices. It is important to note that the use of phthalic anhydrides in the medical field is regulated by various government agencies, including the U.S. Food and Drug Administration (FDA), to ensure that they are safe and effective for their intended uses.

Maleic anhydride is a chemical compound that is not commonly used in the medical field. It is a white, crystalline solid that is used primarily as a chemical intermediate in the production of other chemicals, such as polymers and dyes. It is not used as a medication or for any medical purpose.

Succinic anhydride is a chemical compound that is used in the production of various pharmaceuticals and other chemicals. It is a white, crystalline solid that is soluble in organic solvents but not in water. In the medical field, succinic anhydride is used as a starting material for the synthesis of a number of drugs, including antibiotics, anticonvulsants, and analgesics. It is also used as a solvent and a chemical intermediate in the production of other chemicals.

Citraconic anhydrides are a class of organic compounds that are used in various medical applications. They are typically derived from citric acid, which is a naturally occurring organic acid found in citrus fruits. One common use of citraconic anhydrides in medicine is as a preservative in pharmaceuticals and other medical products. They are also used as a stabilizer in certain types of medical devices, such as catheters and implants. Citraconic anhydrides are also used as a chelating agent, which means they can bind to certain metals and help to remove them from the body. This can be useful in the treatment of certain types of metal poisoning, such as lead poisoning. In addition to their medical uses, citraconic anhydrides are also used in a variety of other industries, including the food and beverage industry, where they are used as a flavor enhancer and preservative.

Epoxy resins are a type of polymer that are commonly used in the medical field for a variety of applications. They are known for their strong, durable, and adhesive properties, which make them ideal for use in medical devices and implants. One common use of epoxy resins in medicine is in the production of dental fillings. Epoxy resins are used to bond to tooth enamel and provide a strong, long-lasting filling that can withstand the wear and tear of daily use. Epoxy resins are also used in the production of medical implants, such as orthopedic implants and dental implants. They are used to bond the implant to the surrounding bone and provide a strong, stable foundation for the implant. In addition to their use in medical devices and implants, epoxy resins are also used in the production of medical equipment, such as surgical instruments and medical imaging equipment. They are used to provide a strong, durable coating that can withstand the harsh conditions of the medical environment. Overall, epoxy resins are an important material in the medical field due to their strong, durable, and adhesive properties, which make them ideal for use in a wide range of medical applications.

Fluoroacetates are a group of organic compounds that contain a fluoroacetate functional group. They are commonly found in plants, particularly in the leaves and stems of certain species, and can be toxic to animals, including humans, if ingested. In the medical field, fluoroacetates are primarily used as research tools to study the metabolism and biochemistry of the body. They are also used as antifungal agents and as a treatment for certain types of cancer. However, exposure to fluoroacetates can be dangerous and can cause a range of symptoms, including nausea, vomiting, abdominal pain, muscle weakness, and in severe cases, seizures, coma, and death. Therefore, it is important to handle fluoroacetates with caution and to seek medical attention immediately if exposure occurs.

Aconitic acid is a dicarboxylic acid that is found naturally in many plants, including hops and walnuts. It is also produced synthetically and has been used in various medical applications. In the medical field, aconitic acid is primarily used as a local anesthetic. It is applied topically to the skin to numb the area and reduce pain. It is also used as a muscle relaxant and to treat muscle spasms. Aconitic acid has also been studied for its potential use in treating certain types of cancer. It has been shown to have anti-tumor effects and may be effective in combination with other cancer treatments. However, aconitic acid can be toxic in high doses and can cause serious side effects, including nausea, vomiting, and cardiac arrhythmias. As a result, it is typically only used under the supervision of a healthcare professional and is not available over-the-counter.

Maleates are a class of organic compounds that contain a carboxylate group (-COO-) attached to a maleic acid moiety. Maleic acid is a dicarboxylic acid with two carboxyl groups (-COOH) attached to a central carbon atom. Maleates are commonly used as intermediates in the production of various chemicals, including polymers, dyes, and pharmaceuticals. In the medical field, maleates are used as active ingredients in some medications. For example, glyceryl maleate is used as a laxative to treat constipation, and magnesium maleate is used to treat high blood pressure. Maleic acid itself is also used as a preservative in some medications and as a buffering agent to adjust the pH of certain formulations. Maleates can also be used as excipients in pharmaceutical formulations, meaning they are added to a medication to improve its stability, solubility, or other properties. For example, sodium maleate is used as a buffering agent in some oral medications to maintain a stable pH in the stomach and improve the absorption of certain drugs.

Diethyl pyrocarbonate (DEPC) is a chemical compound that is commonly used in the medical field as a disinfectant and sterilizing agent. It is a colorless, odorless liquid that is highly reactive and can effectively kill a wide range of microorganisms, including bacteria, viruses, and fungi. DEPC is often used to sterilize laboratory equipment and surfaces, as well as to disinfect solutions and other materials that come into contact with biological samples. It is also used as a preservative in some biological research applications, as it can prevent the growth of microorganisms in solutions that are stored for extended periods of time. However, it is important to note that DEPC is a toxic chemical and should be handled with care. Exposure to DEPC can cause skin irritation, respiratory problems, and other health issues, and it should be stored and used in a well-ventilated area.

In the medical field, disaccharides are two monosaccharide units (simple sugars) that are joined together by a glycosidic bond. Disaccharides are commonly found in foods and are broken down by the body into their constituent monosaccharides during digestion. Some common examples of disaccharides include sucrose (table sugar), lactose (milk sugar), and maltose (malt sugar). Disaccharides are an important source of energy for the body and are also used in the production of various foods and beverages.

Trifluoroacetic acid (TFA) is a colorless, highly corrosive liquid that is commonly used in the chemical industry as a solvent, reagent, and preservative. In the medical field, TFA is used as a chemical peel agent to remove dead skin cells and improve the appearance of the skin. It is also used in the production of certain medications and as a component in some laboratory reagents. However, TFA is highly toxic and can cause serious burns and other injuries if not handled properly. It is important to follow proper safety protocols when working with TFA in a medical or laboratory setting.

Phthalic acids are a group of organic compounds that are commonly used as plasticizers, solvents, and intermediates in the production of various chemicals. In the medical field, phthalic acids and their derivatives have been used in the production of pharmaceuticals, including drugs for the treatment of hypertension, diabetes, and depression. However, some phthalic acids and their derivatives have been linked to potential health risks, including reproductive and developmental effects, liver damage, and cancer. As a result, the use of certain phthalic acids has been restricted or banned in some countries, and alternative compounds are being developed for use in medical applications.

Pyran copolymers are a class of polymers that are composed of repeating units of pyran monomers. Pyran monomers are a type of monomer that contain a six-membered ring with an oxygen atom at the center. Pyran copolymers are used in a variety of medical applications, including as drug delivery systems, as coatings for medical devices, and as biomaterials for tissue engineering. They are known for their biocompatibility, mechanical strength, and chemical stability, which make them useful for a wide range of medical applications.

Coenzyme A-transferases are a group of enzymes that transfer the coenzyme A (CoA) molecule to various substrates. Coenzyme A is a molecule that plays a crucial role in many metabolic pathways in the body, including the breakdown of fatty acids and the synthesis of cholesterol and other lipids. Coenzyme A-transferases are involved in the transfer of the CoA molecule to different substrates, such as amino acids, sugars, and fatty acids. This transfer is an important step in the metabolism of these substrates, as it allows them to be converted into other molecules that can be used by the body for energy production or other metabolic processes. In the medical field, coenzyme A-transferases are important because they are involved in many metabolic disorders, including fatty acid oxidation disorders, which are a group of genetic disorders that affect the body's ability to break down fatty acids for energy. These disorders can cause a range of symptoms, including muscle weakness, fatigue, and developmental delays, and can be life-threatening in severe cases. In addition, coenzyme A-transferases are also important in the development of certain types of cancer, as they can play a role in the metabolism of lipids and the production of signaling molecules that promote cell growth and division. Understanding the role of coenzyme A-transferases in these processes is an active area of research in the field of cancer biology.

In the medical field, furans are a class of organic compounds that are characterized by a five-membered ring containing two oxygen atoms. They are often found as byproducts of various industrial processes, including the production of dyes, pesticides, and pharmaceuticals. Some furans have been identified as potential carcinogens, meaning they can cause cancer in humans. For example, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), which is a furan, is a highly toxic and persistent environmental pollutant that has been linked to a range of health problems, including cancer, reproductive disorders, and immune system dysfunction. In addition to their potential health risks, furans can also be found in certain foods, such as coffee and beer, and have been associated with certain types of cancer in humans. As a result, the levels of furans in food and the environment are closely monitored by regulatory agencies to ensure that they do not pose a risk to human health.

Rutamycin is an antibiotic medication that is used to treat certain bacterial infections. It is a member of the macrolide class of antibiotics, which work by inhibiting the growth of bacteria. Rutamycin is typically used to treat respiratory tract infections, such as pneumonia and bronchitis, as well as skin infections and sexually transmitted infections. It is usually taken by mouth in the form of tablets or capsules. Like all antibiotics, rutamycin should only be used to treat bacterial infections and should not be used to treat viral infections. It is important to follow the dosing instructions provided by your healthcare provider and to complete the full course of treatment, even if you start to feel better before the medication is finished.

Norbornanes are a class of organic compounds that are derived from the bicyclo[2.2.1]heptane ring system. They are typically used as intermediates in the synthesis of other organic compounds, and have also been studied for their potential medicinal applications. In the medical field, norbornanes have been investigated for their potential use as anti-inflammatory agents, as well as for their potential to treat a variety of neurological disorders, including Alzheimer's disease and Parkinson's disease. Some studies have also suggested that norbornanes may have antitumor properties, although more research is needed to confirm these findings. It is important to note that norbornanes are not currently approved for use as medical treatments, and more research is needed to fully understand their potential therapeutic effects and potential side effects.

Benzene derivatives are chemical compounds that are derived from benzene, which is a common organic compound with the chemical formula C6H6. Benzene derivatives are widely used in the medical field for a variety of purposes, including as drugs, as intermediates in the synthesis of other drugs, and as chemical reagents in medical research. Some examples of benzene derivatives that are used in medicine include anesthetics, analgesics, anti-inflammatory drugs, and anticancer drugs. For example, benzene derivatives such as lidocaine and procaine are commonly used as local anesthetics to numb the skin and other tissues during medical procedures. Other benzene derivatives, such as aspirin and ibuprofen, are used as nonsteroidal anti-inflammatory drugs (NSAIDs) to relieve pain, reduce inflammation, and lower fever. Benzene derivatives are also used in the synthesis of other drugs, such as antibiotics, antihistamines, and antidepressants. In addition, benzene derivatives are used as chemical reagents in medical research to study the mechanisms of various biological processes and to develop new drugs and therapies. It is important to note that benzene is a known carcinogen, and exposure to high levels of benzene can cause a range of health problems, including leukemia and other blood disorders. As a result, benzene derivatives must be handled with care in the medical field, and appropriate safety measures must be taken to prevent exposure to benzene and its derivatives.

Succinates are a class of organic compounds that contain the succinate functional group, which is a dicarboxylic acid with the chemical formula C4H6O4. In the medical field, succinates are often used as intermediates in the production of other chemicals and drugs, as well as in the treatment of certain medical conditions. One of the most well-known succinates in medicine is sodium succinate, which is used as a metabolic intermediate in the production of energy in the body. It is also used as a treatment for certain types of metabolic disorders, such as lactic acidosis, which is a condition characterized by an excess of lactic acid in the blood. Another example of a succinate used in medicine is propofol, which is a sedative and anesthetic medication that is commonly used in hospitals and medical procedures. Propofol is a derivative of the succinate molecule and is used to induce and maintain anesthesia in patients. Overall, succinates play an important role in the medical field as intermediates in the production of other chemicals and drugs, as well as in the treatment of certain medical conditions.

Mercaptoethylamines are a class of organic compounds that contain a thiol (-SH) group attached to an ethylamine (-NH2) group. They are commonly used in the medical field as antioxidants, anti-inflammatory agents, and as precursors for the synthesis of other drugs. Some examples of mercaptoethylamines include cysteamine, homocysteine, and methionine. These compounds have been studied for their potential therapeutic effects in a variety of conditions, including cardiovascular disease, neurodegenerative disorders, and cancer.

In the medical field, "formates" typically refers to a group of organic compounds that contain the -OOC-CH2- group. These compounds are often used as solvents, preservatives, and stabilizers in various medical products, such as injectable solutions, ophthalmic solutions, and topical creams. One common example of a formate compound used in medicine is sodium formate, which is used as a buffer in intravenous solutions to maintain the pH of the blood. Other formate compounds, such as propylene glycol formate and glycerol formate, are used as solvents and preservatives in various medical products to prevent bacterial growth and improve stability. It's worth noting that the term "formates" can also refer to a specific type of metabolic disorder called methylmalonic acidemia, which is caused by a deficiency in the enzyme methylmalonyl-CoA mutase. In this case, "formates" refers to the accumulation of methylmalonic acid in the blood and tissues, which can lead to a range of symptoms and complications if left untreated.

Alkenyl succinic anhydrides (ASA) are derivatives of succinic anhydrides. One H of the succinic anhydride ring is replaced with ... "Process for reacting an olefin with maleic anhydride to obtain an alkenyl succinic anhydride", published 1968-11-19, assigned ... and less dark colored alkenyl succinic anhydride (ASA) were needed. The use of alkenylsuccinic anhydrides to hydrophobize ... Therefore, alkenyl succinic anhydrides can be converted into an emulsion only before the use in the paper machine, while AKD ...
Industrially, succinic anhydride is prepared by catalytic hydrogenation of maleic anhydride. Succinic anhydride hydrolyzes ... Succinic anhydride, is an organic compound with the molecular formula (CH2CO)2O. This colorless solid is the acid anhydride of ... Maleic anhydride undergoes the Alder-ene reaction with alkenes to give alkenylsuccinic anhydrides. Such compounds are sizing ... In this role, the anhydride is proposed to form an ester with the hydroxyl groups on the cellulose fibers. Maleic anhydride ...
... or ethanedioic anhydride, also called oxiranedione, is a hypothetical organic compound, one of several isomers ... It can be viewed as the anhydride of oxalic acid or the two-fold ketone of ethylene oxide. It is an oxide of carbon (an ... Media related to Oxalic anhydride at Wikimedia Commons v t e (Articles without EBI source, Articles without KEGG source, ... acid anhydride". J. Chem. Soc., Perkin Trans. 1 (16): 2553-2558. doi:10.1039/a803430c. Ahmed A. El-Sherif; Bakir J. A. Jeragh ( ...
Abbreviated Tf2O, triflic anhydride is the acid anhydride of the superacid triflic acid, CF3SO2OH. Triflic anhydride is ... Trifluoromethanesulfonic anhydride, also known as triflic anhydride, is the chemical compound with the formula (CF3SO2)2O. It ... The typical impurity in triflic anhydride is triflic acid, which is also a colorless liquid. Samples of triflic anhydride can ... Triflic anhydride is useful for converting ketones into enol triflates. In a representative application, is used to convert an ...
... or butanoic anhydride is the chemical compound with the formula (CH3CH2CH2CO)2O. The molecule can be ... Butyric anhydride is a combustible, corrosive liquid. It is considered water sensitive. "MSDS Information". Butyric Anhydride ... Butyric anhydride is a clear colorless liquid that smells strongly of butyric acid, which is formed by its reaction to moisture ...
... may refer to: 3-Chlorophthalic anhydride 4-Chlorophthalic anhydride This disambiguation page lists ... articles associated with the title Chlorophthalic anhydride. If an internal link led you here, you may wish to change the link ...
... , or ethanoic anhydride, is the chemical compound with the formula (CH3CO)2O. Commonly abbreviated Ac2O, it is ... Acetic anhydride, like most acid anhydrides, is a flexible molecule with a nonplanar structure. The pi system linkage through ... Like most acid anhydrides, the carbonyl carbon atom of acetic anhydride has electrophilic character, as the leaving group is ... Due to its low cost, acetic anhydride is usually purchased, not prepared, for use in research laboratories. Acetic anhydride is ...
In organic chemistry, organic acid anhydrides contain the functional group R(CO)O(CO)R'. Organic acid anhydrides often form ... Base anhydride, an oxide that reacts with water to form a hydroxide salt This set index article lists chemical compounds ... An acid anhydride is a type of chemical compound derived by the removal of water molecules from an acid. ... In inorganic chemistry, an acid anhydride refers to an acidic oxide, an oxide that reacts with water to form an oxyacid (an ...
It can be viewed as the anhydride of malonic acid, or a double ketone of oxetane. Malonic anhydride was first synthesized in ... Carbon suboxide (C3O2), an anhydride of malonic anhydride. 2-oxetanone, also called β-propiolactone 3-oxetanone (Articles ... Malonic anhydride or oxetane-2,4-dione is an organic compound with chemical formula C3H2O3 or CH2(CO)2O. ... Charles L. Perrin, Douglas Magde, Sylvia J. Berens, Julie Roque (1980), Raman spectrum of a malonic anhydride. (Actually, of 3, ...
... may refer to: Carbon dioxide, the acidic oxide of carbonic acid Dicarbonic acid, the monoanhydride of ...
... is the organic compound with the formula (C6H5CO)2O. It is the acid anhydride of benzoic acid and the ... It is usually prepared by the dehydration reaction of benzoic acid, e.g. using acetic anhydride: 2 C6H5CO2H + (CH3CO)2O → ( ... It can be produced by dehydrating benzoic acid by heating.[citation needed] Benzoic anhydride provides a convenient way to ... "aldrich product page". H. T. Clarke; E. J. Rahrs (1923). "Benzoic Anhydride". Org. Synth. 3: 21. doi:10.15227/orgsyn.003.0021 ...
... , the anhydride of mellitic acid, is an organic compound with the formula C12O9. Containing no other elements ... e.g., hydrogen) besides carbon and oxygen, mellitic anhydride is an oxide of carbon (oxocarbon), and, along with CO2, CO, and ... Phthalic anhydrides, Oxocarbons, All stub articles, Aromatic compound stubs). ...
... , the cis isomer, is prepared by the Diels-Alder reaction of butadiene and maleic anhydride. Arthur ... Tetrahydrophthalic anhydride is an organic compound with the formula C6H8C2O3. The compound exists as two isomers, this article ... C. Cope; Elbert C. Herrick (1950). "cis-Δ4-Tetrahydrophthalic Anhydride". Org. Synth. 50: 93. doi:10.15227/orgsyn.030.0093. ( ...
... , also known as 5-norbornene-2,3-dicarboxylic anhydride, is an organic acid anhydride derivative of norbornene. ... 3-dicarboxylic anhydride (also known as carbic anhydride). Commercially available nadic anhydride is mainly the endo isomer, as ... Nadic anhydride exhibits endo-exo isomerism. In the exo isomer, the acid anhydride group points in the same direction towards ... Nadic anhydride is used in the synthesis of hydrogel polymers based on thiol-ene linkages. The nadic anhydride is condensed ...
... , also called methanoic anhydride, is an organic compound with the chemical formula C 2H 2O 3 and a structural ... It can be viewed as the anhydride of formic acid (HCOOH). Formic anhydride can be obtained by reaction of formyl fluoride with ... The decomposition of formic anhydride may be catalyzed by formic acid. Formic anhydride can be detected in the gas-phase ... Acetic formic anhydride Acetic anhydride Formaldehyde "Front Matter". Nomenclature of Organic Chemistry : IUPAC Recommendations ...
If water is added to a base anhydride, a corresponding hydroxide salt can be [re]-formed. Base anhydrides are not Brønsted- ... A base anhydride is an oxide of a chemical element from group 1 or 2 (the alkali metals and alkaline earth metals, respectively ... Quicklime (calcium oxide) is a base anhydride. It reacts with skin to become hydrated lime (calcium hydroxide), which is a ... Sodium oxide reacts readily and irreversibly with water to give sodium hydroxide: Na2O + H2O → 2 NaOH Acid anhydride Acidic ...
It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid. It was the first ... Phthalic anhydride is a degradation product of CAP. Phthalic anhydride is a versatile intermediate in organic chemistry, in ... About 10% of maleic anhydride is also produced: C6H4(CH3)2 + 7+1/2 O2 → C4H2O3 + 4 H2O + 4 CO2 Phthalic anhydride and maleic ... Phthalic acid is however easily dehydrated to form phthalic anhydride. Above 180 °C, phthalic anhydride re-forms. Chiral ...
... is an organic compound with the formula HO2CC6H3(C2O3). It is the cyclic anhydride of trimellitic acid. ...
Similar to acetic anhydride, trifluoroacetic anhydride can be used as a dehydrating agent and as an activator for the Pummerer ... Trifluoroacetic anhydride (TFAA) is the acid anhydride of trifluoroacetic acid. It is the perfluorinated derivative of acetic ... Trifluoroacetic anhydride is the recommended desiccant for trifluoroacetic acid. Sigma-Aldrich Co., Trifluoroacetic Anhydride. ... "Dimethyl Sulfoxide-Trifluoroacetic Anhydride. New Reagent for Oxidation of Alcohols to Carbonyls". J. Org. Chem. 41 (6): 957- ...
... is an organic compound with the formula (CH3CH2CO)2O. This simple acid anhydride is a colourless liquid. It ... Due to its potential use as a precursor in the synthesis of fentanyl and fentanyl analogs, propanoic anhydride is regulated by ... Williams, J. W. Krynitsky, J. A. (1941). "n-Caproic Anhydride". Organic Syntheses. 21: 13. doi:10.15227/orgsyn.021.0013.{{cite ... Industrial route to propionic anhydride involves thermal dehydration of propionic acid, driving off the water by distillation: ...
... is the cyclic anhydride of itaconic acid (an unsaturated, dicarboxylic acid) and is obtained by the ... Bromination of itaconic anhydride at - 20 °C and subsequent dehydrobromination produces 2-bromomethylmaleic anhydride in 70% ... At temperatures above its melting point, itaconic anhydride converts to citraconic anhydride. Even at significantly lower ... As an unsaturated cyclic anhydride, itaconic anhydride undergoes radical polymerization and via polycondensation with diols or ...
... (Ms2O) is the acid anhydride of methanesulfonic acid. Like methanesulfonyl chloride (MsCl), it may be ... Methanesulfonyl chloride Disulfuric acid Sodium pyrosulfate Acetic anhydride Trifluoromethanesulfonic anhydride Wachtmeister, C ... Field, Lamar; Settlage, Paul H. (January 1955). "Reaction of Methanesulfonic Anhydride with Hydrogen Halides 1". Journal of the ... Field, Lamar; Settlage, Paul H. (March 1954). "Alkanesulfonic Acid Anhydrides". Journal of the American Chemical Society. 76 (5 ...
... is used as an intermediate agent in plastics material and resin manufacturing. Methacrylic anhydride at ... Methacrylic anhydride is a liquid which reacts with water exothermically. It can also react with hydroxyl- and amino-groups ... "Methacrylic anhydride". PubChem. National Institute of Health. Retrieved 2023-01-20. (Articles without EBI source, Articles ...
... is also a skin and respiratory sensitizer. Maleic anhydride is a low hazard profile chemical. Maleic anhydride ... Maleic anhydride is an organic compound with the formula C2H2(CO)2O. It is the acid anhydride of maleic acid. It is a colorless ... Maleic anhydride is used in many applications. Around 50% of world maleic anhydride output is used in the manufacture of ... Liquid/molten maleic anhydride is a dangerous material in accordance with RID/ADR. Solid maleic anhydride pellets are ...
... is used as a blowing agent in the polymer industry, an application that exploits its tendency to release CO2 ... Isatoic anhydride has also been reported to be used as a precursor for the synthesis of methaqualone and related 4- ... Isatoic anhydride is an organic compound derived from anthranilic acid. A white solid, it is prepared by reaction of ... 1947). "Isatoic anhydride". Org. Synth. 27: 45. doi:10.15227/orgsyn.027.0045. Coppola, Gary M. (1980). "The Chemistry of ...
Oxalic anhydride W. R. Edwards and Walter M. Henley (1953), Acetic Oxalic Anhydride. J. Am. Chem. Soc., volume 75, issue 14, ... Unlike some other anhydrides, Acetic oxalic anhydride cannot be obtained directly from the acids. It was synthesized in 1953 by ... Acetic oxalic anhydride was conjectured to be an intermediate in the decomposition of anhydrous oxalic acid by acetic anhydride ... Acetic oxalic anhydride is an organic compound with a chemical formula of C 6H 6O 6 and a structural formula of (H3C-(C=O)-O-(C ...
... is a monochlorinated aromatic anhydride. It is an isomer of 4-chlorophthalic anhydride and a ... 3-Chlorophthalic anhydride has a melting point of around 123 °C. It may hydrolize in presence of water. 3-Chlorophthalic ... 4-Chlorophthalic anhydride Preparation of 3-chlorophthalic anhydride http://www.freepatentsonline.com/5683553.html (Articles ... anhydride may be used to produce herbicides and pesticides, intermediates for active pharmaceutical ingredients and can be used ...
... is a monochlorinated aromatic anhydride. It is an isomer of 3-chlorophthalic anhydride and a ... It has a melting point of around 99 °C. Like most acid anhydrides, it can hydrolyze in the presence of water. It can be ... Chlorination of phthalic anhydride http://www.freepatentsonline.com/4297283.html (Articles without EBI source, Articles without ... produced by chlorination of phthalic anhydride. It may be used to produce herbicides and pesticides, intermediates for active ...
... is a chemical compound used to produce polyamide-imide plastic. Mellitic acid Trimellitic ... anhydride Margolis, James (2006). "12 Polyamide-imide (PAI)". Engineering Plastics Handbook (1st ed.). Mcgraw-Hill. doi:10.1036 ...
An organic acid anhydride is an acid anhydride that is also an organic compound. An acid anhydride is a compound that has two ... Maleic anhydride is a cyclic anhydride, widely used to make industrial coatings. ATP in its protonated form is an anhydride ... Thus, (CH3CO)2O is called acetic anhydride. Mixed (or unsymmetrical) acid anhydrides, such as acetic formic anhydride (see ... "anhydride" is added. For most unsymmetrical acid anhydrides - also called mixed anhydrides- the prefixes from both acids ...
Acetic acid anhydride,Acetyl acetate,Acetyl anhydride,Ethanoic anhydride; Linear Formula: (CH3CO)2O; find Sigma-Aldrich-242845 ... Acetic anhydride ACS reagent, ≥98.0%; CAS Number: 108-24-7; EC Number: 203-564-8; Synonyms: Acetanhydride, ... Acetic anhydride is an organic solvent. On dissolution in water it undergoes solvolysis to afford acetic acid. It is widely ... Acetic anhydride has been used as one of the reaction components in the preparation of:. *2-acetylamino-5-aminobenzenesulfonic ...
... maleic anhydride-alt-1-octadecene) (PMAO). PMAO contains succinic anhydride units that are reactive towards the oleylamine ... Transforming colloidal Cs4PbBr6 nanocrystals with poly(maleic anhydride-alt-1-octadecene) into stable CsPbBr3 perovskite ... Transforming colloidal Cs4PbBr6 nanocrystals with poly(maleic anhydride-alt-1-octadecene) into stable CsPbBr3 perovskite ...
POLYMERS WITH MALEIC ANHYDRIDE, MIXED DECYL OCTYL ESTERS, REACTION PRODUCTS WITH N,N-DIMETHYL-1,3-PROPANEDIAMINE, BENZYL ... Alkenyl Succinic Anhydrides (10 suppliers). ALKENYL(C16-C18) DIMETHYL AMINE ACETATE (2 suppliers). IUPAC Name: acetic acid;(Z)- ... ALKENES, C24-28 .ALPHA.-, POLYMERS WITH MALEIC ANHYDRIDE, C20-28-ALKYL ESTERS (1 supplier). 68188-50-1. ... ALKENES, C24-36 A-, POLYMERS WITH MALEIC ANHYDRIDE, C20-28-ALKYL ESTERS (1 supplier). 68989-35-5. ...
Chlorosulfonic anhydride, Disulfur pentoxydichloride, Disulfuryl chloride, Sulfur pentoxydichloride. An open source of chemical ...
Itaconic Anhydride. About Itaconic Anhydride. Enquire Now. Our team of experts are at the ready. Fill out the form below and we ...
Anhydrides. Aryls. Azides. Azoes. Benzene Compounds. Benzyl bromides. Plus >>. Organometallic Reagents. Grignard Reagents. ...
the market growth of Maleic anhydride is attributed to its growing application in several resins and plastics, petroleum ... The global maleic anhydride market is expected to reach USD 4,967.0 Mn by 2028 according to a new report by Reports and Data. ... By form, the solid form of maleic anhydride contributed to the largest market share in 2020 and is likely to grow at a rate of ... New York, January 27, 2019 - The global maleic anhydride market is expected to reach USD 4,967.0 Million by 2028, according to ...
Raw Material India (RMI) is a new startup - an online platform Only For Industrial Raw Materials of all types. This is Indias First-Of-Its-Kind Exclusive B2B Raw Materials website.. ...
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It maps a three dimensional point (e.g., 51.464710,0.007900,0 <=> LONDON-SUFFERETH-ANHYDRIDE ) a geoname triple with a ...
Compound Maleic anhydride-alpha-methylstyrene copolymerwith free spectra: 1 FTIR. ... Poly(styrene-co-maleic anhydride). Poly(alpha-methylstyrene-co-butadiene). VINYL ACETATE/MALEIC ANHYDRIDE COPOLYMER. Poly( ... Maleic anhydride-ethylene copolymer. Regular alpha-methylstyrene-methylene-alpha-methylstyrene copolymer (with head-to-head ... ETHYLENE/MALEIC ANHYDRIDE COPOLYMER. Styrene-4-dimethylhydroxysilylstyrene copolymer (9:1), grafted with poly(dimethylsiloxane) ...
Methanesulfonic Anhydride [7143-01-3],Linear Formula C2H6S2O5.Supply advanced organic chemicals. ... 2023-08-09 Methanesulfonic Anhydride [7143-01-3],Linear Formula C2H6S2O5.Supply advanced organic chemicals. Methanesulfonic ...
Supplier and Distributor of Phthalic Anhydride , PA , Europe , Asia ... Phthalic Anhydride (PA). CAS: 85-44-9. Phthalic Anhydride is a white solid flakes or molten liquid with the molecular formula C ... Phthalic Anhydride is obtained by catalytic reforming of ortho-Xylene or naphtalene. ... Arpadis is handling the storage, transport, export & import formalities of Phthalic Anhydride globally. ...
A copolymer of polystyrene (containing sulfonate groups on the ring) and anhydrous maleic acid (a di-hydroxy acid).
Maleic Anhydride. Product Name:Maleic Anhydride Quality Standards:mass fraction of maleic anhydride: 99.72%; fusion colority: ... 15Hazen; crystallization point: 52.7℃ Property and Purpose:maleic anhydride (MA) is the abbreviation of maleic anhydride; ... In addition, maleic anhydride is used as raw material to produce 1,4-butanediol (BOD), γ-butyrolactone (GBL), tetrahydrofuran ( ... THF), maleic acid, fumaric acid, tetrahydrophthalic anhydride and other fine chemical products with a wide application range, ...
Maleic Anhydride (MA). is used as a chemical intermediate in the synthesis of fumaric and tartaric acid, certain agricultural ...
Home/Phthalic Anhydride Market Trend. Phthalic Anhydride Market Trend. * Business. WilliambdAugust 4, 2022. 0 100 ... The Phthalic Anhydride market research 2022-2030 offers substantial authentic information for Phthalic Anhydride, allowing the ... Europe Phthalic Anhydride Market value was Estimated to be $1,141 mn in 2021, to Grow at a CAGR of about 3% from 2021 to 2028. ...
Quantification of protein adducts of hexahydrophthalic anhydride and methylhexahydrophthalic anhydride in human plasma. ... Protein adducts in plasma as biomarkers of exposure to and risk of organic acid anhydrides. ... Total plasma protein adducts of allergenic hexahydrophthalic and methylhexahydrophthalic anhydrides as biomarkers of long-term ... Exposure-response relationships for hexahydrophthalic and methylhexahydrophthalic anhydrides with total plasma protein adducts ...
In 2021, Top exporters of Acids; saturated acyclic monocarboxylic acids; anhydrides, halides, peroxides, peroxyacids and ... HS Code 291590: Acids; saturated acyclic monocarboxylic acids; anhydrides, halides, peroxides, peroxyacids and halogenated, ... Acids; saturated acyclic monocarboxylic acids; anhydrides, halides, peroxides, peroxyacids and halogenated, sulphonated, ... Acids; saturated acyclic monocarboxylic acids; anhydrides, halides, peroxides, peroxyacids and halogenated, sulphonated, ...
some more examples for addition of water into anhydrides SO_2 + H_2O rarr H_2SO_3 CO_2 + H_2O rarr H_2CO_3 N_2O_5 + H_2O rarr ... notice that the oxidation state has not changed even though the anhydride has turned into its acid. ... HNO_3 P_2O_5 + H_2O rarr H_3PO_4 so basically anhydride is the state without water, while the acid is the state with water in ... acid is formed when water is added to an anhydride when you add water into anhydrides, the relative acids are formed. for ...
Key chemical intermediate phthalic anhydride has always come from petrochemical sources. This could change if one Dutch startup ... For the bio-MPA to be fully renewable, the maleic anhydride used to make it should be made by a bio process - which is not ... Biobased phthalic anhydride: Can this key feedstock be green?. February 13, 2023 Jane Denny ... What is not mentioned is that the 2-methylfuran has to be reacted with maleic anhydride (MA) to make this product. For the bio- ...
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N-carboxylic acid anhydride, and anthranilic acid, is the organic compound ... Isatoic acid anhydride also known as o-amino-benzoic acid, 2-aminobenzoic acid, ... Isatoic acid anhydride also known as o-amino-benzoic acid, 2-aminobenzoic acid, N-carboxylic acid anhydride, and anthranilic ... Isatoic acid anhydride also known as o-amino-benzoic acid, 2-aminobenzoic acid, N-carboxylic acid anhydride, and anthranilic ...
Users can register to get a Free Trial of Acetic Anhydride Tenders Online. ... Get latest updates on Acetic Anhydride Tenders from various Indian Government organizations. ... In this section the users can find latest Acetic Anhydride tenders and eProcurement notices from various tendering authorities ... Registered users can download complete tender detail, BOQ, TOR etc for Acetic Anhydride Tenders, published by various ...
SEBS-g-mah Maleic Anhydride Creamy-white bulk ... Location:Home > Dec > SEBS-g-mah Maleic Anhydride Creamy-white ... Contact our sales engineers of SEBS-g-mah Maleic Anhydride Creamy-white bulk in Following Stats. Brest. Gomel. Grodno. Minsk. ... Pe Grafted Maleic Anhydride yellow granules for nucleation. Adhesion Pa6 Toughner yellow granules wholesale. Scratch resistant ... Thermal fusion Maleic Anhydride Creamy-white for lubrication in djibouti. *. Weather Resistant chemical fiber additive ...
Manufacture and Exporter of Maleic Anhydride in Sharjah UAE, Al Qusais, Deira, Saif Zone, Fujairah,Dubai, Abudhabi, Ajman, ... Personal care products consuming maleic anhydride include hair sprays, adhesives and floor polishes. Maleic anhydride is also a ... Diels-Alder reaction of maleic anhydride and butadiene and isoprene gives the respective tetrahydrophthalic anhydrides which ... Maleic anhydride is used in the production of unsaturated polyester resin as well as in the manufacture of coatings, ...
  • We report an approach to prepare polymer-capped CsPbBr 3 perovskite nanocrystals by reacting oleylammonium/oleate-capped Cs 4 PbBr 6 nanocrystals with poly(maleic anhydride- alt -1-octadecene) (PMAO). (rsc.org)
  • New York, January 27, 2019 - The global maleic anhydride market is expected to reach USD 4,967.0 Million by 2028, according to a new report by Reports and Data. (reportsanddata.com)
  • The market growth of Maleic anhydride is attributed to its growing application in several resins and plastics, petroleum additives, agricultural and industrial chemicals, water treatment chemicals, pharmaceuticals, epoxy curing agents, flavor enhancers, and copolymers, among others. (reportsanddata.com)
  • Growing use of maleic anhydride in production of 1, 4-Butanediol is likely to propel the market growth. (reportsanddata.com)
  • By form, the solid form of maleic anhydride contributed to the largest market share in 2020 and is likely to grow at a rate of 5.8% in the forecast period. (reportsanddata.com)
  • Maleic anhydride finds application in the automotive industry for the production of parts comprising body panels, bumper beams, sunroof frames, dashboard carriers, seat structures, catalytic converter heat shields, and battery supports, among others. (reportsanddata.com)
  • Maleic Anhydride_Products_Huaya Holding Co., Ltd. (huayaholding.com)
  • Maleic Anhydride (MA) is used as a chemical intermediate in the synthesis of fumaric and tartaric acid, certain agricultural chemicals, resins in numerous products, dye intermediates, and pharmaceuticals (HSDB, 1995). (nimirchemicals.com)
  • What is not mentioned is that the 2-methylfuran has to be reacted with maleic anhydride (MA) to make this product. (resourcewise.com)
  • Styrene-Maleimide/Maleic Anhydride Alternating Copolymers: Recent Advances and Future Perspectives. (bvsalud.org)
  • Alternating sequencing of styrene -maleimide/ maleic anhydride (S-MI/MA) in the copolymer chain is known for a long time . (bvsalud.org)
  • Several acid anhydrides are known for their sensitizing and irritative properties. (cdc.gov)
  • Acid anhydrides are low-molecular-weight (LMW) chemicals that have been used in industry for more than 50 years as curing agents in the produc- tion of epoxy and alkyd resins and in the manufacture of the plasticizer dioctyl phthalate. (cdc.gov)
  • The functional RCOOCOR' group endows acid anhydrides with the reactivity needed for these applications, but this reactivity is most probably also responsible for the irritative and sensitizing properties of these LMW chemicals (Bernstein et al. (cdc.gov)
  • 1998). Tri- mellitic anhydride (TMA) is a model compound among the acid anhydrides. (cdc.gov)
  • Phthalic Anhydride is a white solid flakes or molten liquid with the molecular formula C 8 H 4 O 3 .It's the principal form of phthalic acid and important industrial chemical of plasticizers for plastics. (arpadis.com)
  • Phthalic Anhydride Chemical Structure Composition. (arpadis.com)
  • Phthalic Anhydride is obtained by catalytic reforming of ortho-Xylene or naphtalene. (arpadis.com)
  • Arpadis is handling the storage, transport, export & import formalities of Phthalic Anhydride globally. (arpadis.com)
  • Biobased phthalic anhydride: Can this key feedstock be green? (resourcewise.com)
  • Phthalic anhydride is a key chemical intermediate in applications from phthalate plasticisers to polyesters. (resourcewise.com)
  • Since there are currently no commercial biobased phthalic anhydride (PA) products available, a non-fossil aromatic could prove a gamechanger. (resourcewise.com)
  • Not only does Relement's bio-MPA (3-methyl phthalic anhydride) replace the fossil ingredient PA in coatings, the Dutch startup says its product increases coatings hardness - making it potentially longer-lasting than its petrochemical counterpart. (resourcewise.com)
  • PMAO contains succinic anhydride units that are reactive towards the oleylamine species present on the Cs 4 PbBr 6 nanocrystals' surface and produces polysuccinamic acid, which, in turn, triggers the Cs 4 PbBr 6 to CsPbBr 3 conversion. (rsc.org)
  • Wistar rats were exposed for 30 min to a range of concentrations (10 to 300 mg/m3) of the well-known respiratory allergen trimellitic anhydride (TMA). (cdc.gov)
  • Acetic anhydride is an organic solvent. (sigmaaldrich.com)
  • Wacher process (starting reagent + a ketene) and Knapsack process (starting reagent = acetaldehyde) have been reported for the industrial preparation of acetic anhydride. (sigmaaldrich.com)
  • Quality Glutaric anhydride - find quality organic intermediates, Organic Intermediate & organic intermediates from Hangzhou Dayangchem Co., Ltd. of China Suppliers - 162144513. (all-is-event.com)
  • 2023-08-09 Methanesulfonic Anhydride [7143-01-3],Linear Formula C2H6S2O5.Supply advanced organic chemicals. (chemsigma.com)
  • Glutaric Anhydride × × Purity: >98.0%(T) Chemical Substance Law (ENCS): 2-3431. (all-is-event.com)
  • Glutaric acid may be employed as starting reagent in the synthesis of glutaric anhydride. (all-is-event.com)
  • when you add water into anhydrides, the relative acids are formed. (socratic.org)
  • 浙公网安备 33010002000092号 Compound Glutaric anhydride with free spectra: 8 NMR, 3 FTIR, and 1 Raman. (all-is-event.com)
  • Grupo de enzimas que catalizan la hidrólisis de enlaces difosfato en compuestos tales como nucleósidos difosfatos y trifosfatos, y anhídridos que contienen grupos sulfonilo, como el adenililsulfato (Enzyme Nomenclature, 1992). (bvsalud.org)
  • Glutaric anhydride CAS: 108-55-4 FOB Price: 20 USD/Kilogram Port: Shanghai Minimum Order Quantity: 1 Kilogram Supply Ability: 10000 Kilogram/Month Payment Terms: L/C,T/T,Paypal, Updatetime: Dec 17 2020 text.skipToContent text.skipToNavigation. (all-is-event.com)
  • Glutaric anhydride-G111074-100g: 4.0 Each price: ¥139.0: Glutaric anhydride-G111074-500g: 4.0 Each price: ¥529.0: This combination does not exist. (all-is-event.com)
  • 9. Peutzfeldt A, Asmussen E. Influence of carboxylic anhydrides on selected mechanical properties of heat-cured resin composites. (bvsalud.org)
  • Some of the applications for these glutaric anhydride are food processing industries, pharmaceutical reactions, sewage treatments, cosmetics manufacturing, coating and essence making processes. (all-is-event.com)
  • Alibaba.com offers a myriad of glutaric anhydride that can save you tons of money on the purchase and get brilliant products for affordable prices. (all-is-event.com)
  • High Purity and Top Quality Glutaric Anhydride with reasonable price on Hot Selling! (all-is-event.com)
  • Glutaric Acid / 110-94-1 / 1, 3-Propanedicarboxylic Acid / 1, 5-Pentanedioic Acid / Used in Preparing Glutaric Anhydride FOB Price: US $ 100 / kg Min. (all-is-event.com)
  • Affiliate, Product Listing Policy Glutaric Anhydride price. (all-is-event.com)
  • Exposure-response relationships for hexahydrophthalic and methylhexahydrophthalic anhydrides with total plasma protein adducts as biomarkers. (lu.se)
  • No matter what your purpose is, you can find all types of glutaric anhydride here that can perfectly blend into your requirements. (all-is-event.com)
  • Glutaric anhydride CAS No. rrSanta Cruz Biotechnology, Inc. is focused on the ongoing development of research reagents. (all-is-event.com)
  • Latest research report, titled "Global Glutaric Anhydride Market Insights, Forecast to 2026. (all-is-event.com)
  • 1688.com For glutaric anhydride rich samples, the intensity at 1143 cm −1 is higher than the intensity at 1166 cm −1. (all-is-event.com)
  • so basically anhydride is the state without water, while the acid is the state with water in it. (socratic.org)
  • ChEBI: A cyclic dicarboxylic anhydride that is phthalic anhydride chlorinated at the 4-, 5-, 6- and 7-positions. (chemicalbook.com)
  • Manufacturing Methods : 2-Methylquinolin-3-ol and Phthalic anhydride condensation. (dyestuffintermediates.com)
  • High yields (95%) of tetrabromophthalic anhydride are achieved by the bromination of phthalic anhydride in 60% oleum (concentrated sulfuric acid with sulfur trioxide). (nih.gov)
  • The compound can also be prepared by the reaction of phthalic anhydride and bromine in a mixture of concentrated sulfuric acid and hydrogen peroxide in the presence of iodine or in chlorosulfonic acid containing small amounts of sulfur. (nih.gov)
  • An overview of Genetic Toxicology Bacterial Mutagenicity study conclusions related to Maleic anhydride (108-31-6). (nih.gov)
  • Genetic Toxicity Evaluation of Maleic Anhydride in Salmonella/E.coli Mutagenicity Test or Ames Test. (nih.gov)
  • Three different cyclic anhydrides , namely, maleic anhydride , succinic anhydride , and glutaric anhydride , were used to pre-crosslink agarose . (bvsalud.org)
  • Cyclic acid anhydrides : human health aspects. (who.int)
  • Preparation of macroporous rigid agarose microspheres by pre-crosslinking with cyclic anhydride. (bvsalud.org)
  • In this study, a new method for preparing macroporous rigid agarose microspheres was developed by one-step pre-crosslinking method with cyclic anhydride . (bvsalud.org)
  • The reaction temperature and the amount of cyclic anhydride in the pre-crosslinking process were optimized to endow agarose with stronger cross-linking. (bvsalud.org)
  • The addition of cyclic anhydride increased the gel aperture of cross-linked agarose microspheres , thereby making the macropores in the microspheres more dense and enhancing the mass transfer in the particles. (bvsalud.org)
  • 1996)‎. Chlorendic acid and anhydride. (who.int)
  • Succinic anhydride is inherently unstable in aqueous media and rapidly hydrolyzes to form succinic acid. (europa.eu)
  • Several acid anhydrides are known for their sensitizing and irritative properties. (cdc.gov)
  • Acid anhydrides are low-molecular-weight (LMW) chemicals that have been used in industry for more than 50 years as curing agents in the produc- tion of epoxy and alkyd resins and in the manufacture of the plasticizer dioctyl phthalate. (cdc.gov)
  • The functional RCOOCOR' group endows acid anhydrides with the reactivity needed for these applications, but this reactivity is most probably also responsible for the irritative and sensitizing properties of these LMW chemicals (Bernstein et al. (cdc.gov)
  • 1998). Tri- mellitic anhydride (TMA) is a model compound among the acid anhydrides. (cdc.gov)
  • Tetrabromophthalic anhydride is expected to be persistent in soils. (nih.gov)
  • pyrolysis and combustion of polymers containing tetrabromophthalic anhydride resulted in undetectable amounts of bromine-containing by-products. (nih.gov)
  • Tetrabromophthalic anhydride is included in the U.S. EPA HPV Challenge Program. (nih.gov)
  • Numerous toxicity studies have been conducted with tetrabromophthalic anhydride. (nih.gov)
  • An overview of Genetic Toxicology Bacterial Mutagenicity study conclusions related to Tetrabromophthalic anhydride (632-79-1). (nih.gov)
  • This requires prior derivatization with propionic anhydride. (erowid.org)
  • HexaHydroPhthalic Anhydride Chemical Structure Composition. (arpadis.com)
  • 3.2 Methyl hexahydrophthalic anhydride, a transparent liquid at room temperature with low viscosity, light color, easy operation, excellent curing performance, etc., is generally used as a curing agent for thermal curing of alicyclic epoxy resin. (tetrawill.com)
  • In a non-GLP study according to OECD 112 t he dissociation constant of succinic anhydride has been determined. (europa.eu)
  • HHPA is preferred over other aromatic anhydrides in casting and coating applications for his higher resistance to yellowing. (arpadis.com)
  • In summary, alicyclic epoxy resin and the anhydride can be used together in such fields as LED packaging, electrical casting, insulation impregnation, insulation potting and composite materials. (tetrawill.com)
  • Tetrachlorophthalic Anhydride is used in the synthesis of nucleoside analogues with a specific structure as apoptosis inducing active compounds. (chemicalbook.com)