Picrates are salts of picric acid, an explosive organic compound previously used as a yellow dye and antiseptic, which are now primarily used in chemical research and industrial applications. Please note that picrates should be handled with care due to their potential explosiveness when heated or subjected to friction.
Creatinine is a waste product that's generated from muscle metabolism, typically filtered through the kidneys and released in urine, with increased levels in blood indicating impaired kidney function.
Chemical agents that uncouple oxidation from phosphorylation in the metabolic cycle so that ATP synthesis does not occur. Included here are those IONOPHORES that disrupt electron transfer by short-circuiting the proton gradient across mitochondrial membranes.
The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Broad-spectrum cephalosporin antibiotic resistant to beta-lactamase. It has been proposed for infections with gram-negative and gram-positive organisms, GONORRHEA, and HAEMOPHILUS.
A group of broad-spectrum antibiotics first isolated from the Mediterranean fungus ACREMONIUM. They contain the beta-lactam moiety thia-azabicyclo-octenecarboxylic acid also called 7-aminocephalosporanic acid.
Colloids with liquid continuous phase and solid dispersed phase; the term is used loosely also for solid-in-gas (AEROSOLS) and other colloidal systems; water-insoluble drugs may be given as suspensions.
Semisynthetic, broad-spectrum antibiotic derivative of CEPHALEXIN.
A compound that, on administration, must undergo chemical conversion by metabolic processes before becoming the pharmacologically active drug for which it is a prodrug.
A fixed-ratio combination of amoxicillin trihydrate and potassium clavulanate.
Acids, salts, and derivatives of clavulanic acid (C8H9O5N). They consist of those beta-lactam compounds that differ from penicillin in having the sulfur of the thiazolidine ring replaced by an oxygen. They have limited antibacterial action, but block bacterial beta-lactamase irreversibly, so that similar antibiotics are not broken down by the bacterial enzymes and therefore can exert their antibacterial effects.

ESR study on the structure-antioxidant activity relationship of tea catechins and their epimers. (1/612)

The purpose of this study is to examine the relationship between the free radical scavenging activities and the chemical structures of tea catechins ((-)-epigallocatechin gallate (EGCG), (-)-epigallocatechin (EGC) and (-)-epicatechin (EC)) and their corresponding epimers ((-)-gallocatechin gallate (GCG), (-)-gallocatechin (GC) and (+)-catechin ((+)-C)). With electron spin resonance (ESR) we investigated their scavenging effects on superoxide anions (O-.2) generated in the irradiated riboflavin system, singlet oxygen(1O2) generated in the photoradiation-hemoporphyrin system, the free radicals generated from 2,2'-azobis(2-amidinopropane)hydrochloride (AAPH) and 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical. The results showed that the scavenging effects of galloylated catechins (EGCG and GCG) on the four free radicals were stronger than those of nongalloylated catechins (EGC, GC, EC, (+)-C), and the scavenging effects of EGC and GC were stronger than those of EC and (+)-C. Thus, it is suggested that the presence of the gallate group at the 3 position plays the most important role in their free radical-scavenging abilities and an additional insertion of the hydroxyl group at the 5' position in the B ring also contributes to their scavenging activities. Moreover, the corresponding phenoxyl radicals formed after the reaction with O-.2 were trapped by DMPO and the ESR spectra of DMPO/phenoxyl radical adducts were observed (aN=15.6 G and aHbeta=21.5 G). No significant differences were found between the scavenging effects of the catechins and their epimers when their concentrations were high. However, significant differences were observed at relatively low concentrations, and the lower their concentrations, the higher the differences. The scavenging abilities of GCG, GC and (+)-C were stronger than those of their corresponding epimers (EGCG, EGC and EC). The differences between their sterical structures played a more important role in their abilities to scavenge large free radicals, such as the free radicals generated from AAPH and the DPPH radical, than to scavenge small free radicals, such as O-.2 and 1O2, especially in the case with EGCG and GCG with more bulky steric hindrance.  (+info)

Formation of hydride-Meisenheimer complexes of picric acid (2,4, 6-trinitrophenol) and 2,4-dinitrophenol during mineralization of picric acid by Nocardioides sp. strain CB 22-2. (2/612)

There are only a few examples of microbial conversion of picric acid (2,4,6-trinitrophenol). None of the organisms that have been described previously is able to use this compound as a sole source of carbon, nitrogen, and energy at high rates. In this study we isolated and characterized a strain, strain CB 22-2, that was able to use picric acid as a sole source of carbon and energy at concentrations up to 40 mM and at rates of 1.6 mmol. h(-1). g (dry weight) of cells(-1) in continuous cultures and 920 micromol. h(-1). g (dry weight) of cells(-1) in flasks. In addition, this strain was able to use picric acid as a sole source of nitrogen at comparable rates in a nitrogen-free medium. Biochemical characterization and 16S ribosomal DNA analysis revealed that strain CB 22-2 is a Nocardioides sp. strain. High-pressure liquid chromatography and UV-visible light data, the low residual chemical oxygen demand, and the stoichiometric release of 2.9 +/- 0.1 mol of nitrite per mol of picric acid provided strong evidence that complete mineralization of picric acid occurred. During transformation, the metabolites detected in the culture supernatant were the [H-]-Meisenheimer complexes of picric acid and 2,4-dinitrophenol (H--DNP), as well as 2,4-dinitrophenol. Experiments performed with crude extracts revealed that H--DNP formation indeed is a physiologically relevant step in picric acid metabolism.  (+info)

Function of coenzyme F420 in aerobic catabolism of 2,4, 6-trinitrophenol and 2,4-dinitrophenol by Nocardioides simplex FJ2-1A. (3/612)

2,4,6-Trinitrophenol (picric acid) and 2,4-dinitrophenol were readily biodegraded by the strain Nocardioides simplex FJ2-1A. Aerobic bacterial degradation of these pi-electron-deficient aromatic compounds is initiated by hydrogenation at the aromatic ring. A two-component enzyme system was identified which catalyzes hydride transfer to picric acid and 2,4-dinitrophenol. Enzymatic activity was dependent on NADPH and coenzyme F420. The latter could be replaced by an authentic preparation of coenzyme F420 from Methanobacterium thermoautotrophicum. One of the protein components functions as a NADPH-dependent F420 reductase. A second component is a hydride transferase which transfers hydride from reduced coenzyme F420 to the aromatic system of the nitrophenols. The N-terminal sequence of the F420 reductase showed high homology with an F420-dependent NADP reductase found in archaea. In contrast, no N-terminal similarity to any known protein was found for the hydride-transferring enzyme.  (+info)

Fucoxanthin as the major antioxidant in Hijikia fusiformis, a common edible seaweed. (4/612)

The radical scavenging activity of Japanese edible seaweeds was screened by the DPPH (1-diphenyl-2-picrylhydrazyl) assay to evaluate the DPPH radical scavenging activity in organic extracts. The fresh brown alga Hijikia fusiformis showed the strongest DPPH radical scavenging activity, followed by Undaria pinnatifida and Sargassum fulvellum. The major active compound from Hijikia fusiformis in its acetone extract was identified as fucoxanthin by 13C-NMR spectroscopy.  (+info)

Dehydroepiandrosterone sulphate promotes hyaluronic acid-induced cervical ripening in rabbits. (5/612)

Hyaluronic acid (HA) stimulates the synthesis of interleukin (IL) 8, while dehydroepiandrosterone sulphate (DHEA-S) induces the expression of IL-8 and its receptor in the human cervical fibroblast. This has led us to investigate the effect of DHEA-S on HA-induced cervical ripening. Experiments were performed in pregnant rabbits using vaginal suppositories containing 1 mg HA, 30 mg DHEA-S, 30 mg DHEA-S + 0.1 mg HA, 30 mg DHEA-S + 1 mg HA, and 500 microl Witepsol-50 base (control). The effects were evaluated by measuring collagenase, gelatinase and elastase activities, water content, neutrophil infiltration, relative collagen concentration and histological assessment. The activities of collagenase, gelatinase and elastase were significantly increased in rabbits treated with DHEA-S + 1 mg HA compared with rabbits treated with DHEA-S + 0.1 mg HA (P < 0.009, P < 0.001, P < 0.009 respectively). Water content was markedly increased in rabbits treated with DHEA-S + 1 mg HA compared with DHEA-S + 0.1 mg HA treatment (P < 0.05). Neutrophil infiltration was markedly increased, while relative collagen concentration was significantly decreased with DHEA-S + 1 mg HA compared with the DHEA-S + 0.1 mg HA approach (P < 0.001, P < 0.002). The histology of cervices treated with DHEA-S + 1 mg HA showed the density of collagen to be markedly decreased, and collagen fibres irregularly separated. Increased vascularity with massive dilatation of blood vessels was also observed in these rabbits. We conclude that DHEA-S upregulates the HA-induced cervical ripening process.  (+info)

Glomerular filtration rate estimation from plasma creatinine after inhibition of tubular secretion: relevance of the creatinine assay. (6/612)

BACKGROUND: Estimation of glomerular filtration rate (GFR) from plasma creatinine concentration after inhibition of tubular creatinine secretion with cimetidine provides a good assessment in patients with various nephropathies and with non-insulin-dependent diabetes mellitus (NIDDM). The aim of this study was to compare cimetidine-aided GFR estimations using various creatinine assays. METHODS: In 30 outpatients with NIDDM GFR was measured as the urinary clearance of continuously infused [125I]iothalamate. Plasma creatinine concentration was analysed after oral cimetidine with an alkaline picrate (AP) method, with an enzymatic (PAP) assay and with HPLC. GFR estimations were calculated with the Cockcroft Gault formula (CG). RESULTS: AP creatinine concentrations were significantly higher than PAP or HPLC values. GFR estimations by AP (CG(AP) 66 +/- 19 ml/min/1.73 m2, mean SD) were significantly lower than GFR (89 +/- 30), whereas CG(PAP) (85 +/- 30) and CG(HPLC) (84 +/- 34 ml/min/1.73 m2) were not. Bland and Altman analysis showed a difference between CG(AP) and GFR of -22.4 +/- 17.7 ml/min/1.73 m2; this difference becomes larger when the GFR increases. The difference between CG and GFR was only -3.8 +/- 14.8 ml/min/1.73 m2 for PAP and -4.4 +/- 17.5 ml/min/1.73 m2 for HPLC, without any systematic difference. CONCLUSION: A good assessment of the GFR from plasma creatinine after cimetidine administration is possible when creatinine is measured with an enzymatic assay or with the less convenient HPLC method. The more widespread and cheaper alkaline picrate assay is not suitable for GFR-estimation.  (+info)

Cutting edge: CD40 ligand is a limiting factor in the humoral response to T cell-dependent antigens. (7/612)

CD40 ligand (CD40L) plays a crucial role in T cell-dependent B cell responses, but whether its abundance is a limiting factor in their development is unclear. This question was addressed in transgenic mice expressing the murine CD40L gene under the control of the IL-2-promoter (CD40Ltg+). The fraction of activated T cells from the CD40Ltg+ mice with detectable levels of surface CD40L was modestly greater (1.1- to 2-fold) than littermate controls and paralleled an approximately 1.8-fold increase in CD40L mRNA abundance. In response to trinitrophenol (TNP)-keyhole limpet hemocyanin and tetanus/diphtheria vaccine, CD40Ltg+ mice developed higher titers of high-affinity IgG and IgG1 Ab than wild-type mice. In contrast, the Ab response of CD40Ltg+ and control mice was similar in response to the T-independent Ag TNP-Ficoll. These results suggest that a modest increment in expression of CD40L accelerates the development of T-dependent responses, and that CD40L plays a limiting role in the induction of high-affinity Ab and Ab-class switching.  (+info)

Radical scavenging activity of phenylpropanoid glycosides in Caryopteris incana. (8/612)

In our screening program for antioxidants from traditional drugs and foodstuffs, one new phenylpropanoid glycoside, incanoside, was isolated together with four known phenylpropanoid glycosides, verbascoside, isoverbascoside, phlinoside A, and 6-O-caffeoyl-beta-D-glucose from the whole plant of Caryopteris incana (Thunb.) Miq. On the basis of chemical evidence and spectral analysis data, the structure of incanoside was determined to be 1-O-(3,4-dihydroxyphenyl)ethyl-O-beta-D-glucopyranosyl (1-->2)-alpha-L-rhamnopyranosyl(1-->3)-6-O-caffeoyl-beta-D- glucopyranoside. The four phenylpropanoid glycosides exhibited potent radical scavenging activity against DPPH, hydroxyl (.OH), and superoxide anion (O2-.) radicals.  (+info)

I am not a medical expert, but I can provide some information that may be helpful. "Picrates" is not a term commonly used in medical definitions. Instead, it is a term used in chemistry to refer to salts of picric acid (2,4,6-trinitrophenol), which was once used as a yellow dye and explosive.

Picric acid has been used historically in some medical applications, such as a component in certain topical antiseptics and in histological staining procedures. However, its use in modern medicine is quite limited due to its high sensitivity to impact, heat, and friction, which makes it potentially dangerous to handle.

Therefore, it's important to note that "picrates" is not a medical term per se but rather a chemical one, and any medical application of picric acid or its salts would be highly specialized and unlikely to be encountered in most healthcare settings.

Creatinine is a waste product that's produced by your muscles and removed from your body by your kidneys. Creatinine is a breakdown product of creatine, a compound found in meat and fish, as well as in the muscles of vertebrates, including humans.

In healthy individuals, the kidneys filter out most of the creatinine and eliminate it through urine. However, when the kidneys are not functioning properly, creatinine levels in the blood can rise. Therefore, measuring the amount of creatinine in the blood or urine is a common way to test how well the kidneys are working. High creatinine levels in the blood may indicate kidney damage or kidney disease.

Uncoupling agents are chemicals that interfere with the normal process of oxidative phosphorylation in cells. In this process, the energy from food is converted into ATP (adenosine triphosphate), which is the main source of energy for cellular functions. Uncouplers disrupt this process by preventing the transfer of high-energy electrons to oxygen, which normally drives the production of ATP.

Instead, the energy from these electrons is released as heat, leading to an increase in body temperature. This effect is similar to what happens during shivering or exercise, when the body generates heat to maintain its core temperature. Uncoupling agents are therefore also known as "mitochondrial protonophores" because they allow protons to leak across the inner mitochondrial membrane, bypassing the ATP synthase enzyme that would normally use the energy from this proton gradient to produce ATP.

Uncoupling agents have been studied for their potential therapeutic uses, such as in weight loss and the treatment of metabolic disorders. However, they can also be toxic at high doses, and their long-term effects on health are not well understood.

Spectrophotometry is a technical analytical method used in the field of medicine and science to measure the amount of light absorbed or transmitted by a substance at specific wavelengths. This technique involves the use of a spectrophotometer, an instrument that measures the intensity of light as it passes through a sample.

In medical applications, spectrophotometry is often used in laboratory settings to analyze various biological samples such as blood, urine, and tissues. For example, it can be used to measure the concentration of specific chemicals or compounds in a sample by measuring the amount of light that is absorbed or transmitted at specific wavelengths.

In addition, spectrophotometry can also be used to assess the properties of biological tissues, such as their optical density and thickness. This information can be useful in the diagnosis and treatment of various medical conditions, including skin disorders, eye diseases, and cancer.

Overall, spectrophotometry is a valuable tool for medical professionals and researchers seeking to understand the composition and properties of various biological samples and tissues.

Hydrogen-ion concentration, also known as pH, is a measure of the acidity or basicity of a solution. It is defined as the negative logarithm (to the base 10) of the hydrogen ion activity in a solution. The standard unit of measurement is the pH unit. A pH of 7 is neutral, less than 7 is acidic, and greater than 7 is basic.

In medical terms, hydrogen-ion concentration is important for maintaining homeostasis within the body. For example, in the stomach, a high hydrogen-ion concentration (low pH) is necessary for the digestion of food. However, in other parts of the body such as blood, a high hydrogen-ion concentration can be harmful and lead to acidosis. Conversely, a low hydrogen-ion concentration (high pH) in the blood can lead to alkalosis. Both acidosis and alkalosis can have serious consequences on various organ systems if not corrected.

Cefuroxime is a type of antibiotic known as a cephalosporin, which is used to treat a variety of bacterial infections. It works by interfering with the bacteria's ability to form a cell wall, which is necessary for its survival. Without a functional cell wall, the bacteria are unable to grow and multiply, and are eventually destroyed by the body's immune system.

Cefuroxime is effective against many different types of bacteria, including both Gram-positive and Gram-negative organisms. It is often used to treat respiratory tract infections, urinary tract infections, skin and soft tissue infections, and bone and joint infections.

Like all antibiotics, cefuroxime should be used only under the direction of a healthcare provider, and it is important to take the full course of treatment as prescribed, even if symptoms improve before the medication is finished. Misuse of antibiotics can lead to the development of drug-resistant bacteria, which are more difficult to treat and can pose a serious threat to public health.

Cephalosporins are a class of antibiotics that are derived from the fungus Acremonium, originally isolated from seawater and cow dung. They have a similar chemical structure to penicillin and share a common four-membered beta-lactam ring in their molecular structure.

Cephalosporins work by inhibiting the synthesis of bacterial cell walls, which ultimately leads to bacterial death. They are broad-spectrum antibiotics, meaning they are effective against a wide range of bacteria, including both Gram-positive and Gram-negative organisms.

There are several generations of cephalosporins, each with different spectra of activity and pharmacokinetic properties. The first generation cephalosporins have a narrow spectrum of activity and are primarily used to treat infections caused by susceptible Gram-positive bacteria, such as Staphylococcus aureus and Streptococcus pneumoniae.

Second-generation cephalosporins have an expanded spectrum of activity that includes some Gram-negative organisms, such as Escherichia coli and Haemophilus influenzae. Third-generation cephalosporins have even broader spectra of activity and are effective against many resistant Gram-negative bacteria, such as Pseudomonas aeruginosa and Klebsiella pneumoniae.

Fourth-generation cephalosporins have activity against both Gram-positive and Gram-negative organisms, including some that are resistant to other antibiotics. They are often reserved for the treatment of serious infections caused by multidrug-resistant bacteria.

Cephalosporins are generally well tolerated, but like penicillin, they can cause allergic reactions in some individuals. Cross-reactivity between cephalosporins and penicillin is estimated to occur in 5-10% of patients with a history of penicillin allergy. Other potential adverse effects include gastrointestinal symptoms (such as nausea, vomiting, and diarrhea), neurotoxicity, and nephrotoxicity.

In the context of medical definitions, "suspensions" typically refers to a preparation in which solid particles are suspended in a liquid medium. This is commonly used for medications that are administered orally, where the solid particles disperse upon shaking and settle back down when left undisturbed. The solid particles can be made up of various substances such as drugs, nutrients, or other active ingredients, while the liquid medium is often water, oil, or alcohol-based.

It's important to note that "suspensions" in a medical context should not be confused with the term as it relates to pharmacology or physiology, where it may refer to the temporary stopping of a bodily function or the removal of something from a solution through settling or filtration.

Cefaclor is a type of antibiotic known as a second-generation cephalosporin. It works by interfering with the bacteria's ability to form a cell wall, which is necessary for its survival. Without a functional cell wall, the bacteria eventually die. Cefaclor is effective against a wide range of gram-positive and gram-negative bacteria, making it a broad-spectrum antibiotic.

Cefaclor is used to treat various types of bacterial infections, including respiratory tract infections (such as bronchitis and pneumonia), ear infections, skin infections, and urinary tract infections. It is available in both oral and intravenous forms.

Like all antibiotics, cefaclor should be used only to treat bacterial infections, as it is not effective against viral infections such as the common cold or flu. Overuse of antibiotics can lead to the development of antibiotic-resistant bacteria, which can make future infections more difficult to treat. It is important to take cefaclor exactly as directed by a healthcare professional and to complete the full course of treatment, even if symptoms improve before all of the medication has been taken.

A prodrug is a pharmacologically inactive substance that, once administered, is metabolized into a drug that is active. Prodrugs are designed to improve the bioavailability or delivery of a drug, to minimize adverse effects, or to target the drug to specific sites in the body. The conversion of a prodrug to its active form typically occurs through enzymatic reactions in the liver or other tissues.

Prodrugs can offer several advantages over traditional drugs, including:

* Improved absorption: Some drugs have poor bioavailability due to their chemical properties, which make them difficult to absorb from the gastrointestinal tract. Prodrugs can be designed with improved absorption characteristics, allowing for more efficient delivery of the active drug to the body.
* Reduced toxicity: By masking the active drug's chemical structure, prodrugs can reduce its interactions with sensitive tissues and organs, thereby minimizing adverse effects.
* Targeted delivery: Prodrugs can be designed to selectively release the active drug in specific areas of the body, such as tumors or sites of infection, allowing for more precise and effective therapy.

Examples of prodrugs include:

* Aspirin (acetylsalicylic acid), which is metabolized to salicylic acid in the liver.
* Enalapril, an angiotensin-converting enzyme (ACE) inhibitor used to treat hypertension and heart failure, which is metabolized to enalaprilat in the liver.
* Codeine, an opioid analgesic, which is metabolized to morphine in the liver by the enzyme CYP2D6.

It's important to note that not all prodrugs are successful, and some may even have unintended consequences. For example, if a patient has a genetic variation that affects the activity of the enzyme responsible for converting the prodrug to its active form, the drug may not be effective or may produce adverse effects. Therefore, it's essential to consider individual genetic factors when prescribing prodrugs.

The Amoxicillin-Potassium Clavulanate Combination is an antibiotic medication used to treat various infections caused by bacteria. This combination therapy combines the antibiotic amoxicillin with potassium clavulanate, which is a beta-lactamase inhibitor. The addition of potassium clavulanate helps protect amoxicillin from being broken down by certain types of bacteria that produce beta-lactamases, thus increasing the effectiveness of the antibiotic against a broader range of bacterial infections.

Amoxicillin is a type of penicillin antibiotic that works by inhibiting the synthesis of the bacterial cell wall, ultimately leading to bacterial death. However, some bacteria have developed enzymes called beta-lactamases, which can break down and inactivate certain antibiotics like amoxicillin. Potassium clavulanate is added to the combination to inhibit these beta-lactamase enzymes, allowing amoxicillin to maintain its effectiveness against a wider range of bacteria.

This combination medication is used to treat various infections, including skin and soft tissue infections, respiratory tract infections, urinary tract infections, and dental infections. It's essential to follow the prescribed dosage and duration as directed by a healthcare professional to ensure effective treatment and prevent antibiotic resistance.

Common brand names for this combination include Augmentin and Amoxiclav.

Clavulanic acid is not a medical condition, but rather an antibacterial compound that is often combined with certain antibiotics to increase their effectiveness against bacteria that have become resistant to the antibiotic alone. It works by inhibiting certain enzymes produced by bacteria that help them to resist the antibiotic, allowing the antibiotic to work more effectively.

Clavulanic acid is typically combined with antibiotics such as amoxicillin or ticarcillin to treat a variety of bacterial infections, including respiratory tract infections, urinary tract infections, and skin and soft tissue infections. It is important to note that clavulanate-containing medications should only be used under the direction of a healthcare provider, as misuse or overuse can contribute to antibiotic resistance.

... namely lead picrate or potassium picrate which find their use as primers for cartridge ammunition. Picrates of some metals tend ... A picrate is a salt containing the anion (O2N)3C6H2O− or an ester derivative of the picrate anion. These salts are often ... Ferrous picrate is used in some applications as a diesel fuel additive to achieve better mileage. Sodium picrate is used as an ... Many picrates are explosives, for example ammonium picrate (known as Dunnite). Some are used as primary explosives, ...
... is an organic picrate salt. It is a sensitive and highly explosive compound that is typically found as a hydrate. ... Dry lead picrate is incredibly dangerous and cannot be handled without explosive decomposition occurring. Lead picrate was ... Numerous lead precursors can be used to create lead picrate. Two of the simplest examples of lead picrate synthesis are the ... "Solubilities and enthalpies of solution of picric acid and picrates at 298.15K in DMF, EtOH and acetic acid". Thermochimica ...
In contact with metals (e.g. lead, calcium, iron), potassium picrate, like ammonium picrate and picric acid, forms picrates of ... Potassium picrate, or potassium 2,4,6-trinitrophenolate, is an organic chemical, a picrate of potassium. It is a reddish yellow ... Anhydrous potassium picrate forms orthorhombic crystals. Potassium picrate was first prepared as impure in mid-17th century by ... with lead picrate and potassium chlorate). Potassium picrate is not a very powerful explosive. It is somewhat shock-sensitive. ...
... picrates, and chlorates. Also the chemistry and analysis of the elementary bodies which enter into the manufacture of the ...
"PowerLabs Lead Picrate Synthesis". powerlabs.org. Archived from the original on 22 May 2016. Matyáš, Robert; Pachman, Jiří ( ... azide Iodine azide Hexamethylene triperoxide diamine Hydrazoic acid Hypofluorous acid Lead azide Lead styphnate Lead picrate ...
Steinrauf, L. K.; Hamilton, J. A.; Sabesan, M. N. (1982). "Crystal structure of valinomycin-sodium picrate. Anion effects on ...
Frydenvang, K.; Jensen, B. (15 May 1993). "Structures of muscarine picrate and muscarine tetraphenylborate". Acta ...
77-78 °C; and the picrate in long needles, mp. 121-122 °C. N-Methyl-d-coniine was prepared by the action of potassium methyl ...
Ammonium picrate (known as Dunnite or explosive D) was used by the United States beginning in 1906. However, shells filled with ... By contrast, picrate salts were solids that did not sublimate, so they did not dissipate heat; hence they did detonate.(( ... Glass or plastic bottles are required, as picric acid can easily form metal picrate salts that are even more sensitive and ... It has found some use in organic chemistry for the preparation of crystalline salts of organic bases (picrates) for the purpose ...
The Navy proposed to continue using ammonium picrate. In contrast, the National Defense Research Committee (NDRC), who had ...
77 °C. The picrate forms small yellow needles, mp. 75 °C, from hot water. The 2,4-dinitrobenzoyl- and 3,5-dinitrobenzoyl- ...
Ammonium picrate is a salt formed by reacting picric acid and ammonia. It is chemically related to the more stable explosive ... Dunnite, also known as Explosive D or systematically as ammonium picrate, is an explosive developed in 1906 by US Army Major ...
Manola, Miguel's fiancée arrives, fleeing from the unwelcome attentions of Prince Picrates de Calabazas, the Portuguese prime ... Achille-Félix Montaubry Prince Picrates de Calabazas, prime minister of Portugal - Jules Brasseur Manola - Marguerite Ugalde ...
The site handled explosives including ammonium nitrate and ammonium picrate, but no radioactive materials were handled there. ...
Phenol could be nitrated to picric acid and converted to ammonium picrate, a shock resistant high explosive suitable for use in ... It is said that German companies bought up supplies of phenol to block production of ammonium picrate. Edison preferred not to ... Parliament blocked exports and diverted most to production of ammonium picrate. Britain also blockaded supplies from Germany. ...
The US forces normally used the explosive Explosive D, otherwise known as ammonium picrate, for this purpose. Other combatant ...
Ammonium picrate (known as Dunnite or explosive D) was used by the United States beginning in 1906. Germany began filling ...
They are considered hazardous as, over time, picric acid will react to form crystals of metal picrates, such as iron picrate. ...
Picrates penetrate tissue well to react with histones and basic proteins to form crystalline picrates with amino acids and ...
It burns readily and is more easily detonated than ammonium picrate or TNT, being about as sensitive as picric acid. It is ...
August 9: Noël Bissot, Belgian comics artist (Le Baron, Youk et Yak, Le Picrate, Croquemitron, Juju), dies at age 55. Specific ...
As iron picrate is sensitive to being struck or hit, this could have been as source of ignition when the drums made contact ... The fire was most probably started by the ignition of iron picrate which was on the top of the drums. "Died from … the result ... explosion and consequent fire having been caused by the ignition of Picric Acid probably due to the presence of iron picrate on ... tin was easily worn away exposing the iron underneath which would have reacted with the picric acid to form iron picrate. ...
The picrate forms shining prisms (m.p. 198−200 °C) soluble in water but sparingly soluble in dry alcohol or ether. The alkaloid ...
Kinetic Jaffe methods involve mixing serum with alkaline picrate and reading the rate of change in absorption ...
... due to its tendency to form picric acid and dangerous picrate salts, its use has largely been abandoned. Wasag-Chemie, Essen. " ...
The bunker was built in 1941-42 to store the explosives picric acid and ammonium picrate for use during World War II. Of 21 ...
Almost all the common explosives listed here were mixtures of several common components: Ammonium picrate TNT (Trinitrotoluene ...
It will additionally coprecipitate with many other caesium salts, including the iodate, the picrate, the tartrate (also ... Francium nitrate, sulfate, hydroxide, carbonate, acetate, and oxalate, are all soluble in water, while the iodate, picrate, ...
It will additionally coprecipitate with many other caesium salts, including the iodate, the picrate, the tartrate (also ... Francium nitrate, sulfate, hydroxide, carbonate, acetate, and oxalate, are all soluble in water, while the iodate, picrate, ...
The Maumelle Ordnance Works were built by the War Department in 1941 to produce the explosives picric acid, ammonium picrate, ...
... namely lead picrate or potassium picrate which find their use as primers for cartridge ammunition. Picrates of some metals tend ... A picrate is a salt containing the anion (O2N)3C6H2O− or an ester derivative of the picrate anion. These salts are often ... Ferrous picrate is used in some applications as a diesel fuel additive to achieve better mileage. Sodium picrate is used as an ... Many picrates are explosives, for example ammonium picrate (known as Dunnite). Some are used as primary explosives, ...
TITLE: Optical and Dielectric Studies on L-Valinium Picrate Single Crystal AUTHORS: P. Koteeswari, P. Mani, S. Suresh KEYWORDS ... Studies on the Effect of Ba2+ on Growth, structural, Morphology, Optical, and Mechanical Properties of L-Valinium Picrate ... K. Anitha, B. Sridhar and R. K. Rajaram, "L-Valinium picrate," Acta Crystallographica, Vol. E60, 2004, pp. o1530-o1532. doi: ... The transmittance of L-Valinium picrate crystal has been used to calculate the refractive index (n), the extinction coefficient ...
Over the past generation, advents in topical antibiotics and oral analgesia have obscured butamen and its family of topical anesthetics. Using a modified version of the McGill University pain questionnaire, this study attempts to establish the efficacy and clinical utility of this overlooked topical anesthetic.
nbsp; Key words: Picrate pyridine transition phase, reversibility, infrared (IR), Raman, X-ray diffraction (XRD). ... nbsp; Key words: Picrate pyridine transition phase, reversibility, infrared (IR), Raman, X-ray diffraction (XRD). ... The spectra of the crystals of pyridine picrate crude formula, C11H8N4O7, in the mid infrared (IR) and Raman are studied as a ... The spectra of the crystals of pyridine picrate crude formula, C11H8N4O7, in the mid infrared (IR) and Raman are studied as a ...
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The two most interesting ones were Potassium and Lead Picrate (with Sodium Picrate being very weak). Below, the synthesis of a ... Metal picrates are salts of Picric Acid formed by the addition of the metal to the 2,4,6TriNitroPhenol ring at the first ... As the solution is cooled gradually to 0C, the potassium picrate crystallizes out of it in the form of a framework of long ... For curiositys sake experiments were performed on the synthesis of a few metal picrates and they were tested as to their ...
Tom Allgaier will show the actual procedure on how to synthesize Potassium picrate with hot water, picric acid, and potassium ... In this video, Tom Allgaier will show the actual procedure on how to synthesize Potassium picrate with hot water, picric acid, ...
PicRate, The best resource for erotic pictures of nude and sexy woman. Rate and discover a fun way to show your opinion of ...
Detailed characterization in nutrients and phytochemicals with antioxidant activities of 26 kidney beans was performed. The kidney beans contained high levels of dietary fiber (29.32-46.77%), resistant starch (9.16-18.09%) and protein (22.06-32.63%) but low levels of lipid (1.05-2.83%) and sugars (1 …
Picrates, Plant Leaves/chemistry, Plants, Medicinal/chemistry, Skin/cytology/drug effects, South Africa, Spectrophotometry, ... Picrates); 0 (Tetrazolium Salts); 1898-66-4 (2,2-diphenyl-1-picrylhydrazyl); 23305-68-2 (MTT formazan); ppublish ...
... probe 3 has a high selectivity for picrate over competitive anions and picrate-containing analytes, which meet the selective ... By adding the picrate anions, green-yellow fluorescence emission quenches, which is easily observed by naked eyes under a 365 ... 1,8-Naphthalimide derivative-based turn-off fluorescent probe for the detection of picrate in organic aqueous media. ... This phenomenon is essential for producing a highly selective and sensitive fluorescent probe for picrate anions. The probe can ...
Simple picrate paper kit for determination of the cyanogenic potential of cassava flour. J Sci Food Agric 1998;76:39-48. ...
FERRUM PICRICUM (PICRATE OF IRON). § One of the best medicine for senile prostatic hypertrophy or enlarged prostate in old men. ...
Picric Acid, Trinitrophenol, Ammonium Picrate, Ammon. Pic, Acidum picrinicum, Picrinicum adicum, Acidum Picricum, Pic-ac.. ...
Picric Acid, Trinitrophenol, Ammonium Picrate, Ammon. Pic, Acidum picrinicum, Picrinicum adicum, Acidum Picricum, Pic-ac.. ...
Lead picrate (dry) EC / List no: 684-862-9 , CAS no: 25721-38-4 ...
The LX20 modular chemistry side uses the Jaffe rate method (kinetic alkaline picrate) to determine the concentration of ... A precise volume of sample is introduced into areaction cup containing an alkaline picrate solution. Absorbance readings are ... the Roche method was then compared to the original NHANES 2003-2004 measurements which used the Jaffe kinetic alkaline picrate ...
Silver picrate, wetted with not less than 30.0% water, by mass. 1347. Physical Hazards Not Otherwise Classified - Category 1. ... Ammonium picrate, wetted with not less than 10.0% water, by mass. 1310. Physical Hazards Not Otherwise Classified - Category 1 ...
Picric acid and Picrate salts by Patricia Charlebois. *Waves character of explosions by Fred Scaffidi ...
248 uint8_t fixed_pic_rate_within_cvs_flag = 0;. 249 uint8_t fixed_pic_rate_general_flag = get_bits1(gb); ...
And some explosives (picrate based) start to form crystals as they age. Getting more and more sensitive. In worst case youll ...
The colorimetric serum creatinine assay (alkaline picrate method) cross-reacts with noncreatinine chromogens, particularly ...
The presence of cefuroxime does not interfere with the assay of serum and urine creatinine by the alkaline picrate method. ...
... alkaline picrate) reaction using the Beckman AU 5800 analyser. ...
... serum creatinine by the alkaline picrate method, and SGOT by colorimetric methods. Interference with spectrophotometric methods ...
  • Picrates of some metals tend to be significantly more sensitive to impact, friction and shock than picric acid itself. (wikipedia.org)
  • Ethers and esters of picric acid are also called picrates. (wikipedia.org)
  • It is widely known that Picric Acid should not be allowed to contact metals or their salts due to the danger of formation of metal picrates. (power-labs.com)
  • Metal picrates are salts of Picric Acid formed by the addition of the metal to the 2,4,6TriNitroPhenol ring at the first hydroxide, as seen on the example to the left (KO-C 6 H 2 (NO 2 ) 3 or KC 6 H 2 N 3 O 7 ). (power-labs.com)
  • In this video, Tom Allgaier will show the actual procedure on how to synthesize Potassium picrate with hot water, picric acid, and potassium carbonate. (rumble.com)
  • These were mainly picric acid, picric sulfonic acid and unidentified picrate salts along with some hydrazines. (trinitynews.ie)
  • C9H12O2S) C,H,S. The picrate can be formed by treatment with a saturated EtOH solution of picric acid. (drugwiki.net)
  • Urinary creatinine concentrations are measured on an autoanalyzer using the Jaffe method, where creatinine combines with picric acid to form a creatinine-picrate complex that changes the absorbency of the solution. (jax.org)
  • In order to synthesize potassium picrate using potassium carbonate the procedure remains the same except K2CO3 is substituted for KOH. (power-labs.com)
  • The ether methyl picrate (CAS# 606-35-9) has the formula (O2N)3C6H2OCH3. (wikipedia.org)
  • Many picrates are explosives, for example ammonium picrate (known as Dunnite). (wikipedia.org)
  • The picrate ion is intensely yellow, although many of its salts are brown or orange-red. (wikipedia.org)
  • Some are used as primary explosives, namely lead picrate or potassium picrate which find their use as primers for cartridge ammunition. (wikipedia.org)
  • The two most interesting ones were Potassium and Lead Picrate (with Sodium Picrate being very weak). (power-labs.com)
  • Metal Picrates are sensitive explosives and as such should not be manufactured at all! (power-labs.com)
  • And some explosives (picrate based) start to form crystals as they age. (axishistory.com)
  • ABSTRACT: Single crystals of L-Valinium picrate were grown from aqueous solution by slow evaporation technique. (scirp.org)
  • The spectra of the crystals of pyridine picrate crude formula, C 11 H 8 N 4 O 7 , in the mid infrared (IR) and Raman are studied as a function of temperature. (academicjournals.org)
  • As the solution is cooled gradually to 0C, the potassium picrate crystallizes out of it in the form of a framework of long needle-shaped crystals. (power-labs.com)
  • A picrate is a salt containing the anion (O2N)3C6H2O− or an ester derivative of the picrate anion. (wikipedia.org)
  • The synthesis of a simple fluorescent naphthalimide-based receptor N -allyl-4-iminodi( N -butylacetamide)-1,8-naphthalimide 3 was carried out as a selective picrate (Pic - ) anion probe, and the detecting behavior of this probe was studied by fluorescence spectroscopy. (degruyter.com)
  • For curiosity's sake experiments were performed on the synthesis of a few metal picrates and they were tested as to their properties. (power-labs.com)
  • Below, the synthesis of a small potassium Picrate batch is outlined for informational purposes only. (power-labs.com)
  • This phenomenon is essential for producing a highly selective and sensitive fluorescent probe for picrate anions. (degruyter.com)
  • TNP nitronates formed under these conditions are more unstable than the picrates in what they turn back after standing a while in neutral media (return to the yellow color). (power-labs.com)
  • Most importantly, probe 3 has a high selectivity for picrate over competitive anions and picrate-containing analytes, which meet the selective requirements for practical application. (degruyter.com)
  • Picrates of some metals tend to be significantly more sensitive to impact, friction and shock than picric acid itself. (wikipedia.org)
  • Ethers and esters of picric acid are also called picrates. (wikipedia.org)
  • I am not experienced in making energetics except for black gunpowder and nitrocellulose, both of which I've made a few times with great success (but no more than 10 grams of powder and 2 cotton balls at a time), and I wanted to try my hand at making small quantities of the following: RDX, ETN, Picric acid, Ammonium Picrate, Nickel Hydrazine Nitrate, and (possibly) DDNP. (sciencemadness.org)
  • Ferrous picrate is used in some applications as a diesel fuel additive to achieve better mileage. (wikipedia.org)
  • One additive, ferrous picrate, lacked measurable effects on exhaust emissions. (cdc.gov)
  • Serum and urinary creatinine concentrations were determined using the Jaffe kinetic alkaline picrate method. (medscape.com)
  • A standard method for determining urine creatinine levels is based on Jaffe's reaction, in which creatinine treated with an alkaline picrate solution yields a bright orange-red complex. (health-care-clinic.org)