Aromatic compounds sulfonic acid. Medical search. Frequent questions

The degradation of polycyclic aromatic hydrocarbons by different algae seems to be related to the molecular structures of the compound and physiological metabolism of the algae. (omicsonline.org)
Our scope of services includes volatile halogenated hydrocarbons, volatile organic compounds, polycyclic aromatic hydrocarbons (PAHs), etc. (cd-elisakit.com)

EI-Sheekh MM, Ghareib MM, EL-Souod GW A (2011) IBiodegradation of Phenolic and Polycyclic Aromatic Compounds by Some Algae and Cyanobacteria. (omicsonline.org)
Naphthalene is a simple polycyclic aromatic hydrocarbon, and is naturally available in white crystalline form. (growthmarketreports.com)

Carboxylic acids. (lookformedical.com)
Carboxylic acids can be saturated, unsaturated, or aromatic. (lookformedical.com)
Method for preparing a steroidal carbothioic acid by reacting steroidal carboxylic acids or salts with carbodiimides alone or in conjunction with a coupling enhancer followed by reaction with a nucleophilic sulfur containing agent. (allindianpatents.com)
The present invention relates to a novel process for the conversion of steroidal carboxylic acids to carbothioate derivatives such as fluticasone propionate via novel intermediates. (allindianpatents.com)
Coupling agents and enhancers have primarily been used in peptide chemistry where the need to activate carboxylic acids in order to facilitate peptide couplings has been recognized for decades (Handbook of Reagents for Organic Synthesis, Activating Agents and Protecting Groups, ed. (allindianpatents.com)

Several aromatic compounds such as biphenyl, phenols, anysols, diaryl-ethers present in the lignin structure contribute to their irregular and recalcitrant nature. (scielo.br)

Gasoline vapors contain about 90% alkanes and 2% aromatics (0.9% benzene). (cdc.gov)
The organic compound structure consists of a fused pair of benzene rings. (growthmarketreports.com)
Ansink HRW, Cerfontain H . Sulfonation of 1, 2‐(methylenedioxy)benzene, 1, 2‐(ethylenedioxy)benzene, 2‐methylanisole, 2, 3‐dihydrobenzofuran, chromane, benzo‐15‐crown‐5 and dibenzo‐30‐crown‐10 in concentrated sulfuric acid and with sulfur trioxide Recueil Des Travaux Chimiques Des Pays-Bas . (academictree.org)
OK, so we're finishing up on talking about aromatic compounds, about the chemistry of benzene. (yale.edu)
Benzene is a non-polar colourless, inflammable liquid, with a sweet and distinctive aromatic smell that some find pleasant. (bris.ac.uk)
Benzene is a very good solvent for organic compounds, but it is safer to use its derivative methylbenzene (toluene). (bris.ac.uk)
For the production of Sulfonic Acid, alkaline benzene linear sulfation is usually used. (hjoilgroup.com)
Linear Alkyl Benzene Sulphonic Acid is an anionic surfactant with molecules characterized by a hydrophobic and a hydrophilic group. (hjoilgroup.com)

On heating aliphatic and aromatic primary amines with chloroform and ethanolic KOH they form isocyanides or carbylamines which have foul odour. (topperlearning.com)
Primary aliphatic amines react with nitrous acid to form aliphatic diazonium salts. (topperlearning.com)
Aromatic amines on treating with nitrous acid at low temperatures to form diazonium salts which are used in the synthesis of a variety of aromatic compounds. (topperlearning.com)
Secondary and tertiary amines react with nitrous acid in a different manner. (topperlearning.com)
So direct oxidation of aromatic amines is not useful since it gives tarry oxidation products along with some nitro derivatives. (topperlearning.com)

New York: Wiley-Interscience, p. 749, ISBN 978-0-471-72091-1 Otto Lindner, Lars Rodefeld "Benzenesulfonic Acids and Their Derivatives" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim. (wikipedia.org)
The problem to be solved by the present invention is to provide a new method for the preparation of steroidal carbothioic acid and derivatives thereof such as fluticasone propionate, especially a method in which a number of the relevant method steps may be performed as a continuous one-pot synthesis. (allindianpatents.com)

p-toluenesulfonic acid esters, are a common class of reagents used in the pharmaceutical industry as alkylating agents, catalysts, and in purification steps of the chemical synthesis of a drug substance. (ncats.io)
Within the field of steroids the use of coupling agents have also found use, especially in the preparation of carbothioic acids and esters of the androstane series (e.g. (allindianpatents.com)

Benzenesulfonic acid, di-C10-14-alkyl derivs. (europa.eu)
The Friedel-Crafts reaction creates new alkyl- or acyl-aromatic bonds, with or without cation rearrangement. (yale.edu)
Linear alkylbenzene sulfonic acid are complex mixtures of homologues of different alkyl chain lengths (C10 to C13 or C14) and phenyl positional isomers of 2 to 5-phenyl in proportions dictated by the starting materials and reaction conditions, each containing an aromatic ring sulfonated at the para position and attached to a linear alkyl chain at any position with the exception of terminal one (1-phenyl). (hjoilgroup.com)

Scendesmus obliques is able to utilize naphthalene sulphonic acids as a sulfur source for their biomass with releasing the carbon ring into the medium. (omicsonline.org)
Artificially synthesized naphthalene compounds is used as precursors in the production of other chemicals. (growthmarketreports.com)
Naphthalene sulfonic acids are used in synthesis of dyestuffs and pharmaceuticals , among others. (growthmarketreports.com)

The short-chain structure of the foam includes an aromatic dicarboxylic acid ethylene glycol ester block structure and an aromatic dicarboxylic acid butylene glycol ester block structure. (just-style.com)
The aromatic dicarboxylic acid ethylene glycol ester block structure and the aromatic dicarboxylic acid butylene glycol ester block structure can comprise p-phenylene, m-phenylene, or a combination thereof. (just-style.com)

p-Toluenesulfonic acid monohydrate has been used as a reducing agent for the reductive amination of ketones and aldehydes. (ncats.io)

This block structure is created by reacting a polytetramethylene ether glycol with a depolymerized reaction product of the aromatic polyester compound. (just-style.com)

A cyclized derivative of L-GLUTAMIC ACID. (lookformedical.com)

These structures are formed through depolymerization or partial depolymerization reactions of the aromatic polyester compound. (just-style.com)
Conventional semiconducting polymer synthesis typically involves transition metal-mediated coupling reactions that link aromatic units with single bonds along the backbone. (nature.com)
The increased stability of the intermediates (such as compounds of formula (III)) against competing hydrolysis reactions, removes the need to work under anhydrous conditions. (allindianpatents.com)

In organic chemistry, the desulfonation reaction is the hydrolysis of sulfonic acids: RC6H4SO3H + H2O → RC6H5 + H2SO4 The reaction applied to aryl and naphthylsulfonic acids. (wikipedia.org)
Metal ion-dependent molecular inclusion chemistry: inclusion of aromatic anions by coordinated 1,4,7,10-tetrakis((S)-2-hydroxy-3-phenoxypropyl)-1,4,7,10-tetraazacyclododecane. (ncats.io)
So many of the early developments in organic chemistry, especially in the second half of the 19th century, had to do with aromatic chemistry. (yale.edu)
So much recent chemistry is on other subjects, but much of the classical work was on aromatic compounds, and they still are important. (yale.edu)
And about triphenylmethyl, which was a particularly important compound for the development of chemistry in the U.S. (yale.edu)

Diazonium group is a very good leaving group and is substituted by other groups such as Cl-, Br - ,I - ,CN - and OH - which displace nitrogen from the aromatic ring. (topperlearning.com)

calcium salts and acute and repeated-dose toxicity data on benzenesulfonic acid, di-C10-14-alkylderivs. (europa.eu)
calcium salts and the calcium read across substances were used to predict toxicokinetic behaviour of benzenesulfonic acid, di-C10-14-alkylderivs. (europa.eu)

Aromatic rings with strong electron withdrawal can undergo nucleophilic aromatic substitution, which plays an important role in biochemistry. (yale.edu)
The present invention provides a method which comprises A) reacting a steroidal carboxylic acid or a salt thereof with a coupling agent alone or in conjunction with a coupling enhancer, and B) reacting the product of step A) with a nucleophilic agent comprising a sulfur atom. (allindianpatents.com)

Lignosulfonic and tannic acids were used as sole carbon sources during 30 days under microaerobic and very-low-oxygen conditions. (scielo.br)
Compounds with a 5-membered ring of four carbons and an oxygen. (lookformedical.com)
And its ingredients Linear Alkylbenzene, Oxygen, Sulfur and Citric Acid. (hjoilgroup.com)
and under illumination or ultrasound, the compound can produce reactive oxygen species with high efficiency, which has a good killing effect on cancer cells and cancer tissues, and almost has no toxic or side effects on normal tissues while achieving photo/acoustic dynamic therapy on tumors. (justia.com)

Berlman, I. B. (1971) Handbook of Fluorescence Spectra of Aromatic Molecules. (photochemcad.com)
Birks, J. B. (1970) Photophysics of Aromatic Molecules, pp 84-141. (photochemcad.com)
The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (lookformedical.com)

A process for the preparation of substituted aromatic compounds employing Friedel-Crafts reaction and using a basic anionic clay hydrotalcite-type solid catalyst. (justia.com)
Both the homogeneous and heterogeneous catalyzed liquid phase Friedel-Crafts processes for the preparation of alkylated and acylated aromatic compounds are known in the prior art. (justia.com)
So the Friedel-Crafts reaction we were just beginning with, and we'll talk today about some ideas about how you design syntheses, and about benzylic stabilization, the reactivity at positions next to an aromatic system. (yale.edu)

In the United States, organic lead compounds were phased out as anti-knock additives in 1997 and are no longer used in commercial gasoline. (cdc.gov)

Hyptis suaveolens contains unique terpenoid metabolites like suaveolic acid, suaveolol, methyl suaveolate, beta-sitosterol, ursolic acid, and phenolic compound like rosamarinic acid, methyl rosamarinate that have potentiality to substitute the traditional drugs as therapeutic agent against the resistant and newly emerged bacterial and viral pathogens. (springeropen.com)
Cerfontain H , Koeberg-Telder A. Sulfonation and sulfation on reaction of 1,4‐dihydroxybenzene and its methyl ethers in concentrated sulfuric acid Recueil Des Travaux Chimiques Des Pays-Bas . (academictree.org)

Lignosulphonate compounds are highly hydrophilic macromolecules due to sulfonic acid content, and just a minor fraction of lignosulfonic acid is removed from the water phase by absorption onto organic carbon, sediments or water treatment. (scielo.br)

Purification of Aromatic Compounds in case of mineral oils & waxes and removal of Sulphuric acid, Tars acid, Sludge, Sulfonic acid etc. (ltrsoft.com)
Aniline on reacting with sulphuric acid forms anilinium hydrogen sulphate which on heating with sulphuric acid at 453-473K gives p-aminobenzene sulphonic acid as the major product. (topperlearning.com)
LABSA is produced by the sulfonation of LAB with sulphuric acid in batch reactors. (hjoilgroup.com)

The method is also useful for the preparation of 2,6-dinitroaniline and 2-bromophenol via phenol-2,4-disulfonic acid. (wikipedia.org)

Sulfonic Acid (LABSA) is a batch of organic Sulfur compounds that are used as an anionic surfactant in most home detergents such as dishwashing detergents and washing powders. (hjoilgroup.com)
Other sulfonation alternative reagents are oleum, diluted sulfur trioxide, chlorosulfonic acid and sulfamic acid on falling film reactors. (hjoilgroup.com)

Rather, the physical chemical properties of benzenesulfonic acid, di-C10-14-alkylderivs. (europa.eu)
The process for this invention could be used for the preparation of alkylated or acylated aromatic compounds, which are fine chemicals and/or used as intermediates in the preparation of fine chemicals or specialty chemicals in dyes and pharmaceutical industries and other chemical industries. (justia.com)
The relationship between the chemical structure of a compound and its biological or pharmacological activity. (lookformedical.com)

This invention particularly relates to a process for the alkylation or acylation of aromatic compounds by an alkylating or acylating agent for preparing alkylated or acylated aromatic compounds, using basic anionic clay hydrotalcite-type solid catalyst. (justia.com)
An aromatic sulfonic acid, often used as a strong acid catalyst. (ncats.io)

2-Chlorotoluene for example can be prepared by chlorination of p-toluenesulfonic acid, followed by hydrolysis. (wikipedia.org)
The lack of a suitable leaving group renders compounds resistant to hydrolysis. (europa.eu)

Harvesting this yeast under acidic conditions aka adding up to 3% sulfuric acid hardens the yeast and makes a ph as low as 4,3. (thevespiary.org)

According to one embodiment, the method comprises providing a substrate having dielectric oxide surface areas adjacent to electrically conductive surface areas, chemically bonding an anchor compound with the dielectric oxide surface areas so as to form an anchor layer, initiating the growth of a metal using the electrically conductive surface areas and growing the metal so that the anchor layer also bonds with the metal. (patentsencyclopedia.com)
In 1833, Eilhard Mitscherlich a German chemist produced what he called benzin via the distillation of benzoic acid (from gum benzoin ) and calcium oxide (lime). (bris.ac.uk)

This group of compounds includes amino acids and fatty acids. (lookformedical.com)

Additionally, the foam may include a sulfonic acid group residue, such as 5-sulfoisophthalic acid or 5-sulfoisophthalic acid sodium salt. (just-style.com)

Koeberg‐Telder A, Cerfontain H . Acid-catalyzed transfer sulfonation of anisole using overcrowded polymethylbenzenesulfonic acids†‡ Recueil Des Travaux Chimiques Des Pays-Bas . (academictree.org)
They are non-volatile compounds produced by sulfonation. (hjoilgroup.com)

2% aromatics, consist entirely of carbon and hydrogen and do not contain hydrolyzable groups. (europa.eu)

The calcium sulfonate target substance is expected to be extensively metabolised (metabolism by cytochrome P450 enzymes, followed by omega- and beta-oxidation and cleavage of the aromatic ring and desulfonation) and to be eliminated mainly via the urine and also via the bile. (europa.eu)

Metabolism of sulfonamide drugs in animals includes conjugation at the N4-position (acetyl, sulfate, glucuronic acid, and glucose), conjugation at the N1-position (sulfate and glucuronic acid), removal of the p-amino group (formation of the desamino metabolite), ring hydroxylation, and conjugation of the ring hydroxylation products. (drugbank.com)

Nitro compounds on reduction with hydrogen gas in the presence of finely divided nickel. (topperlearning.com)

The powerful, aromatic smell should keep spiders and other pests at bay. (tomsguide.com)

Nitric acid is a nitrating agent plus a good oxidising agent. (topperlearning.com)

It is an aromatic organic compound with the molecular formula C6H6. (ohsonline.com)

Anatomy4

Organisms37

Diseases4

Chemicals and Drugs143

Analytical, Diagnostic and Therapeutic Techniques and Equipment20

Phenomena and Processes41

Disciplines and Occupations4

Technology, Industry, Agriculture3

Information Science4

Health Care8

Hydrocarbons2

Polycyclic2

Carboxylic Acids5

Phenols1

Benzene8

Amines5

Derivatives2

Esters2

Alkyl3

Naphthalene3

Dicarboxylic acid2

Aldehydes1

Ether1

Derivative1

Reactions3

Chemistry5

Nitrogen1

Salts2

Nucleophilic2

Oxygen4

Molecules3

Friedel-Crafts3

19971

Methyl2

Hydrophilic1

Sulphuric acid3

Phenol1

Sulfur2

Chemical3

Catalyst2

Hydrolysis2

Sulfuric acid1

Oxide2

Fatty1

Sodium1

Sulfonation2

Carbon1

Oxidation1

Glucose1

Hydrogen1

Smell1

Nitric1

Molecular Formula1