Methylmaleic anhydrides.
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.

Identification of a critical lysine residue in apolipoprotein B-100 that mediates noncovalent interaction with apolipoprotein(a). (1/19)

We have previously shown that lipoprotein(a) (Lp(a)) assembly involves an initial noncovalent interaction between sequences within apolipoprotein(a) (apo(a)) kringle IV types 5-8 and the amino terminus of apolipoprotein B-100 (sequences between amino acids 680 and 781 in apoB-100), followed by formation of a disulfide bond. In the present study, citraconylation of lysine residues in apoB-100 abolished the ability of the modified low density lipoprotein to associate with apo(a), thereby demonstrating a direct role for lysine residues in apoB in the first step of Lp(a) assembly. To identify specific lysine residues in the amino terminus of apoB that are required for the noncovalent interaction, we initially used an affinity chromatography method in which recombinant forms of apo(a) (r-apo(a)) were immobilized on Sepharose beads. Assessment of the ability of carboxyl-terminal truncations of apoB-18 to bind to r-apo(a)-Sepharose revealed that a 25-amino acid sequence in apoB (amino acids 680-704) bound specifically to apo(a) in a lysine-dependent manner; citraconylation of the lysine residues in the apoB derivative encoding this sequence abolished the binding interaction. Using fluorescence spectrometry, we found that a synthetic peptide corresponding to this sequence bound directly to apo(a); the peptide also reduced covalent Lp(a) formation. Lysine residues present in this sequence (Lys(680) and Lys(690)) were mutated to alanine in the context of apoB-18. We found that the apoB-18 species containing the Lys(680) mutation was incapable of binding to r-apo(a)-Sepharose columns, whereas the apoB-18 species containing the Lys(690) mutation exhibited slightly reduced binding to these columns. Taken together, our data indicate that Lys(680) is critical for the noncovalent interaction of apo(a) and apoB-100 that precedes covalent Lp(a) formation.  (+info)

Modification of amino groups of human-erythrocyte glycoproteins and the new concept on the structural basis of M and M blood-group specificity. (2/19)

1. Various kinds of modification of amino groups of M and N blood group glycoproteins abolished their capacity to inhibit rabbit and human anti-M and anit-N sera. 2. The reversible modification of amino groups revealed that M and N blood group activity was restored after the removal of amino-group-blocking residues. 3. Modification of amino groups had an entirely different effect on the reactivity of red cell glycoproteins with Vicia graminea agglutinin. The serological activity of N glycoprotein towards Vicia graminea anti-N agglutinin was unchanged, whereas the weak activity of M glycoprotein towards this anti-N agglutinin was increased to the level of the of N glycoprotein. 4. These results indicate that there is a structural difference between M and N glycoproteins, which resides beyond the oligosaccharide chains. It suggests in turn that M and N blood group specificity is determined by amino acid sequence in the peptide chains of red cell glycoproteins.  (+info)

Chemical modification of glucose oxidase: possible formation of molten globule-like intermediate structure. (3/19)

Chemical modification of lysine residues in glucose oxidase was carried out using citraconic anhydride. Modification brought about changes in the kinetic properties of the enzyme as evident by substantial lowering of V(max) and K(m). Enhancement of tryptophan fluorescence was observed with a dramatic change in its pH dependence due to modification. Near- and far-UV circular dichroism spectra of the native and modified forms suggested formation of molten globule-like structures, further supported by 8-anilino-1-naphthalenesulfonic acid fluorescence which indicated higher exposure of hydrophobic residues as a result of chemical modification.  (+info)

Increased thermal and organic solvent tolerance of modified horseradish peroxidase. (4/19)

Horseradish peroxidase (HRP) was modified by maleic anhydride and citraconic anhydride. The thermal and organic solvent tolerances of native and modified enzyme were compared. These chemical modifications of HRP increased their thermostability both in aqueous buffer and some organic solvents, and also enhanced their tolerances of some organic solvents. We have studied the unfolding of native and modified HRP by heat to determine the conformational stability. The temperature at the midpoint of thermal denaturation (T(m)) was increased upon modification. Both enthalpy change (DeltaH(m)) and entropy change (DeltaS(m)) for unfolding of modified enzyme at T(m) were decreased compared with native enzyme. Circular dichroism studies proved that these modifications changed the conformation of HRP. The improvements of stability are related to side chain reorientations of aromatics upon both modifications.  (+info)

Improvement of activity and stability of chloroperoxidase by chemical modification. (5/19)

BACKGROUND: Enzymes show relative instability in solvents or at elevated temperature and lower activity in organic solvent than in water. These limit the industrial applications of enzymes. RESULTS: In order to improve the activity and stability of chloroperoxidase, chloroperoxidase was modified by citraconic anhydride, maleic anhydride or phthalic anhydride. The catalytic activities, thermostabilities and organic solvent tolerances of native and modified enzymes were compared. In aqueous buffer, modified chloroperoxidases showed similar Km values and greater catalytic efficiencies kcat/Km for both sulfoxidation and oxidation of phenol compared to native chloroperoxidase. Of these modified chloroperoxidases, citraconic anhydride-modified chloroperoxidase showed the greatest catalytic efficiency in aqueous buffer. These modifications of chloroperoxidase increased their catalytic efficiencies for sulfoxidation by 12%~26% and catalytic efficiencies for phenol oxidation by 7%~53% in aqueous buffer. However, in organic solvent (DMF), modified chloroperoxidases had lower Km values and higher catalytic efficiencies kcat/Km than native chloroperoxidase. These modifications also improved their thermostabilities by 1~2-fold and solvent tolerances of DMF. CD studies show that these modifications did not change the secondary structure of chloroperoxidase. Fluorescence spectra proved that these modifications changed the environment of tryptophan. CONCLUSION: Chemical modification of epsilon-amino groups of lysine residues of chloroperoxidase using citraconic anhydride, maleic anhydride or phthalic anhydride is a simple and powerful method to enhance catalytic properties of enzyme. The improvements of the activity and stability of chloroperoxidase are related to side chain reorientations of aromatics upon both modifications.  (+info)

Chemical modifications of ribonuclease U1. (6/19)

In order to obtain information on the nature of the amino acid residues involved in the activity of ribonuclease U1 [EC 3.1.4.8], various chemical modifications of the enzyme were carried out. RNase U1 was inactivated by reaction with iodoacetate at pH 5.5 with concomitant incorporation of 1 carboxymethyl group per molecule of the enzyme. The residue specifically modified by iodoacetate was identified as one of the glutamic acid residues, as in the case of RNase T1. The enzyme was also inactivated extensively by reaction with iodoacetamide at pH 8.0 with the loss of about one residue each of histidine and lysine. When RNase U1 was treated with a large excess of phenylglyoxal, the enzymatic activity and binding ability toward 3'-GMP were lost, with simultaneous modification of about 1 residue of arginine. The reaction of citraconic anhydride with RNase U1 led to the loss of enzymatic activity and modification of about 1 residue of lysine. The inactivated enzyme, however, retained binding ability toward 3'-GMP. These results indicate that there are marked similarities in the active sites of RNases T1 and U1.  (+info)

Listeria monocytogenes phosphatidylinositol-specific phospholipase C: Kinetic activation and homing in on different interfaces. (7/19)

 (+info)

Chemical modification of lysine residues in lysozyme may dramatically influence its amyloid fibrillation. (8/19)

 (+info)

Citraconic anhydride is a chemical compound that is used in the synthesis of various pharmaceuticals and industrial products. It is an anhydride of citraconic acid, which is a unsaturated dicarboxylic acid. Citraconic anhydride is an important reagent in organic chemistry due to its ability to act as a acylating agent, meaning it can transfer an acyl group (a functional group consisting of a carbon atom double-bonded to an oxygen atom: -CO-) to other molecules.

In the medical field, citraconic anhydride is not used directly as a therapeutic agent. However, it may be used in the production of certain drugs or drug delivery systems. For example, it has been used in the synthesis of biodegradable polymers for drug delivery, and in the modification of proteins and peptides for therapeutic purposes.

It is important to note that citraconic anhydride itself is not a medication, but rather a chemical reagent used in the production of certain pharmaceutical compounds. As such, it does not have a specific medical definition, but rather a chemical one.

Anhydrides are chemical compounds that form when a single molecule of water is removed from an acid, resulting in the formation of a new compound. The term "anhydride" comes from the Greek words "an," meaning without, and "hydor," meaning water.

In organic chemistry, anhydrides are commonly formed by the removal of water from a carboxylic acid. For example, when acetic acid (CH3COOH) loses a molecule of water, it forms acetic anhydride (CH3CO)2O. Acetic anhydride is a reactive compound that can be used to introduce an acetyl group (-COCH3) into other organic compounds.

Inorganic anhydrides are also important in chemistry and include compounds such as sulfur trioxide (SO3), which is an anhydride of sulfuric acid (H2SO4). Sulfur trioxide can react with water to form sulfuric acid, making it a key intermediate in the production of this important industrial chemical.

It's worth noting that some anhydrides can be hazardous and may require special handling and safety precautions.

Acetic anhydride is a chemical compound with the formula (CH3CO)2O. It is a colorless liquid that is used as a reagent in organic synthesis, particularly in the production of cellulose acetate and other acetate esters. Acetic anhydride is also an important intermediate in the synthesis of certain pharmaceuticals and dyes.

In medical terminology, acetic anhydride is not typically used as a diagnostic or therapeutic agent. However, it can be used in laboratory settings to synthesize compounds that may have medical applications. For example, acetic anhydride has been used to produce certain antiviral drugs and antibiotics.

It is important to note that acetic anhydride can be harmful or fatal if swallowed, inhaled, or absorbed through the skin. It can cause burns and eye damage, and may be harmful to the respiratory system if inhaled. Therefore, it should be handled with care and used only in well-ventilated areas with appropriate personal protective equipment.

I'm sorry for any confusion, but "Phthalic Anhydrides" is not a medical term. It is a chemical compound with the formula C6H4(CO)2O. Phthalic anhydride is a white crystalline powder used in the industrial synthesis of plasticizers, resins, and dyes.

If you have any questions about medical terminology or concepts, please don't hesitate to ask!

I believe there may be some confusion in your question. Maleic anhydride is not a medical term, but rather a chemical compound with the formula C2H2O3. It is a white crystalline solid that is used in industrial applications such as the production of polymers and resins.

If you are asking about a medical condition related to exposure or sensitivity to maleic anhydride, I would recommend consulting a medical professional for accurate information. However, in general, inhalation or skin contact with maleic anhydride can cause irritation and respiratory symptoms, and prolonged exposure may lead to more serious health effects. People with sensitivities or allergies to the compound may experience more severe reactions.

I'm sorry for any confusion, but "Succinic Anhydrides" is not a recognized medical term. Succinic anhydride is a chemical compound with the formula (CH2)2(CO)2O. It is used in organic synthesis as a dehydrating agent and acylating agent. If you're asking about a medical application or effect of succinic anhydride or its derivatives, I would need more specific information to provide an accurate and helpful response.

29-38, doi:10.1002/jlac.18360190107 R.L. Shriner, S. G. Ford, L. J. Roll (1931). "Citraconic Anhydride and Citraconic Acid". ... At temperatures above its melting point, itaconic anhydride converts to citraconic anhydride. Even at significantly lower ... "Kinetic study of the isomerization of itaconic anhydride to citraconic anhydride", J. Org. Chem., vol. 47, no. 8, pp. 1572-1574 ... chloride as cocatalyst quantitatively provides itaconic anhydride contaminated with citraconic anhydride already at 40 °C in 1 ...
... citraconic acid can be produced by thermal isomerization of itaconic acid anhydride to give citraconic anhydride, which can be ... R. L. Shriner; S. G. Ford; l. J. Roll (1931). "Citraconic Anhydride and Citraconic Acid". Org. Synth. 28: 28. doi:10.15227/ ... The acid displays the unusual property of spontaneously forming the anhydride, which, unlike maleic anhydride, is a liquid at ... Citraconic acid is an organic compound with the formula CH3C2H(CO2H)2. It is a white solid. The alkene is cis. The related ...
Upon heating, itaconic anhydride isomerizes to citraconic acid anhydride, which can be hydrolyzed to citraconic acid (2- ... R. L. Shriner; S. G. Ford; l. J. Roll (1931). "Citraconic Anhydride and Citraconic Acid". Org. Synth. 28: 28. doi:10.15227/ ... R. L. Shriner; S. G. Ford; l. J. Roll (1931). "Itaconic anhydride and itaconic acid". Org. Synth. 11: 70. doi:10.15227/orgsyn. ... Dry distillation of citric acid affords itaconic anhydride, which undergoes hydrolysis to itaconic acid. ...
Citraconic acid can be produced via thermal isomerization of itaconic acid anhydride. The required itaconic acid anhydride is ... R. L. Shriner; S. G. Ford; l. J. Roll (1931). "Citraconic Anhydride and Citraconic Acid". Org. Synth. 28: 28. doi:10.15227/ ... R. L. Shriner; S. G. Ford; l. J. Roll (1931). "Itaconic anhydride and itaconic acid". Org. Synth. 11: 70. doi:10.15227/orgsyn. ... Dehydration routes give itaconic acid and its anhydride. ...
Itaconic acid anhydride is isomerized to citraconic anhydride, which is hydrolyzed and the resulting acid further isomerized ... It is prepared from citric acid, which is first converted to itaconic anhydride by dehydration and decarboxylation. ...
... citraconic anhydrides MeSH D03.383.312.355 - furaldehyde MeSH D03.383.312.490 - lasalocid MeSH D03.383.312.520 - maleic ... anhydrides MeSH D03.383.312.600 - monensin MeSH D03.383.312.620 - nafronyl MeSH D03.383.312.634 - nigericin MeSH D03.383. ...
... citraconic acid can be produced by thermal isomerization of itaconic acid anhydride to give citraconic anhydride, which can be ... R. L. Shriner; S. G. Ford; l. J. Roll (1931). "Citraconic Anhydride and Citraconic Acid". Org. Synth. 28: 28. doi:10.15227/ ... The acid displays the unusual property of spontaneously forming the anhydride, which, unlike maleic anhydride, is a liquid at ... Citraconic acid is an organic compound with the formula CH3C2H(CO2H)2. It is a white solid. The alkene is cis. The related ...
Citraconic Anhydride. Citraconic anhydride reacts with primary amines and blocks them by creating an amide linkage and a ... Carboxylation kit With Citraconic Anhydride. G-Biosciences Carboxylation Kit With Citraconic Anhydride is designed for ... Citraconic anhydride reacts with primary amines and blocks them by creating an amide linkage and a terminal carboxylate. The ... the amide linkage is rapidly hydrolyzed to release the citraconic acid and free.. ...
... acetic-anhydride (108247), butyric-anhydride (106310), citraconic-anhydride (616024), dodecenylsuccinic-anhydride (25377735), ... succinic-anhydride (108305), tetrahydrophthalic-anhydride (85438), and trimellitic-anhydride (552307). The organic anhydrides ... isobutyric-anhydride (97723), maleic-anhydride (108316), phthalic-anhydride (85449), propionic-anhydride (123626), pyromellitic ... The maleic, phthalic, acetic and trimellitic anhydrides appeared to be the most acutely toxic of the group discussed. All were ...
... citraconic acid, mesaconic acid, maleic anhydride, and the like and mixtures thereof. Suitable diols include but are not ... phthalic anhydride, chlorendic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, endomethylene ... Preferred unsaturated polyester base resins are prepared from diacids and/or anhydrides such as, for example, maleic anhydride ... tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, tetrabromophthalic anhydride, and the like and mixtures thereof; ...
... glutaric anhydride, maleic anhydride, citraconic anhydride, glutaconic anhydride, itaconic anhydride, diglycolic anhydride, ... cyclohexanedicarboxylic anhydride, cyclopentanetetracarboxylic dianhydride, and phenylsuccinic anhydride; spiro compounds such ...
... citraconic acid, mesaconic acid, maleic anhydride, and the like and mixtures thereof. Suitable diols include but are not ... phthalic anhydride, chlorendic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, endomethylene ... Preferred unsaturated polyester base resins are prepared from diacids and/or anhydrides such as, for example, maleic anhydride ... tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, tetrabromophthalic anhydride, and the like and mixtures thereof; ...
... maleic anhydride, citraconic anhydride, benzaldehyde and p-methyl benzoquinone. In the p-xylene experiment, the products ... 5-dione and citraconic anhydride. For 1,3,5-TMB reactions, the products identified were 3,5-dimethylbenzaldehyde, 3,5-dimethyl- ...
... maleic anhydride, itaconic anhydride, citraconic anhydride and tetrahydrophthalic anhydride.. According to this first ... anhydride. The quantity of unsaturated carboxylic acid or anhydride can be up to 15% by weight of the. copolymer, and the ... If (C2) contains anhydride. functions, its proportion is such that there are from 0.5 to 1.5 anhydride functions per epoxide ... By way of examples of anhydrides mention may be made of the partial or total anhydrides of the above acids.. Advantageously, ...
... teams of these kind of heterotelechelic polymer-bonded organizations are generally altered together with citraconic anhydride, ...
... acid OR anhydride) ADJ1 (acrylic OR crotonic OR (vinyl ADJ1 acetic) OR fumaric OR maleic OR malonic OR succinic OR itaconic OR ... citraconic)) OR polymer* OR styrene OR ester*) SAME (((pressure ADJ1 sensitive) NEAR2 (adhesive* OR glue OR paste OR (binding ...
... citraconic anhydride-acrylamide) (poly(CA-alt-AAm) and ternary poly(citraconic anhydride-acrylamide-vinyl acetate) (poly(CA-co- ... Experimental and theoretical approaches to investigating the miscibility of anhydride-containing copolymers and dextran ...
... maleic anhydride, fumaric acid, itaconic acid, citraconic acid, mesaconic acid, glutaconic acid, aconitic acid, allylsulfonic ... by transesterification with (meth)acrylic esters and also by acidolysis with (meth)acryloyl chloride or (meth)acrylic anhydride ... maleic anhydride, vinylsulfonic acid, vinylphosphonic acid, maleic acid, ...
... altering the chemical structures of the monomer from succinic anhydride to trans-maleic anhydride (MA), cis-MA, and citraconic ... colors and efficiency were synthesized by the copolymerization of six epoxides and four anhydrides. Experimental and ... anhydride (CA), secondary structures of these polyesters change from helix to straight and folding sheet accompanied by ...
... maleic anhydride, fumaric acid, itaconic acid, citraconic acid, methylene malonic acid, sorbic acid, cinnamic acid or mixtures ... carboxylic anhydrides, in particular phthalic anhydride, acylated polyhydric alcohols, in particular triacetin, ethylene glycol ... ethylene-maleic anhydride copolymer, Monsanto), Thickener QR 1001 (polyurethane emulsion, 19-21% in water/diglycol ether, Rohm ...
... for the isotachophoretic separation of amino acids at low to intermediate pH after derivatization with citraconic anhydride. ...
Anhydrides. *Acetic Anhydrides. *Citraconic Anhydrides. *Maleic Anhydrides. *Phthalic Anhydrides. *Polyanhydrides. *Succinic ... "Acetic Anhydrides" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical Subject ... This graph shows the total number of publications written about "Acetic Anhydrides" by people in this website by year, and ... Below are the most recent publications written about "Acetic Anhydrides" by people in Profiles. ...
Citraconic Anhydrides. *Darunavir. *Furaldehyde. *Lasalocid. *Maleic Anhydrides. *Monensin. *Nafronyl. *Nigericin. *Nitrofurans ...
Citraconic Anhydrides. *Furaldehyde. *Lasalocid. *Maleic Anhydrides. *Monensin. *Nafronyl. *Nigericin. *Nitrofurans. * ...
Citraconic Anhydrides. *Darunavir. *Furaldehyde. *Lasalocid. *Maleic Anhydrides. *Monensin. *Nafronyl. *Nigericin. *Nitrofurans ...
Citraconic anhydride (Alpha-methylmaleicanhydride). 2-Methyl-3-trifluoromethylaniline. 2-Hydroxyethylmethacrylate (1,2- ...
Reversing the effects of formalin fixation with citraconic anhydride and heat: a universal antigen retrieval method.. Namimatsu ...
For immunohistochemical (IHC) analysis of tissue sections, antigen retrieval was carried in 0.05% citraconic anhydride (pH 7.4) ...
Reversing the effects of formalin fixation with citraconic anhydride and heat: a universal antigen retrieval method. Namimatsu ...
Citraconic anhydride (Alpha-methylmaleicanhydride) * 1,4,7-Trimethyl-1,4,7-triazacyclononane ...
... acetic-anhydride (108247), butyric-anhydride (106310), citraconic-anhydride (616024), dodecenylsuccinic-anhydride (25377735), ... succinic-anhydride (108305), tetrahydrophthalic-anhydride (85438), and trimellitic-anhydride (552307). The organic anhydrides ... isobutyric-anhydride (97723), maleic-anhydride (108316), phthalic-anhydride (85449), propionic-anhydride (123626), pyromellitic ... The maleic, phthalic, acetic and trimellitic anhydrides appeared to be the most acutely toxic of the group discussed. All were ...
Anhydride, Citraconic. Anhydrides, Citraconic. Anhydrides, Methylmaleic. Citraconic Anhydride. Methylmaleic Anhydrides. Tree ... Anhydride, 2-Methylmaleic Anhydride, Citraconic Anhydrides, Citraconic Anhydrides, Methylmaleic Citraconic Anhydride ... Citraconic Anhydrides Entry term(s). 2 Methylmaleic Anhydride 2-Methylmaleic Anhydride ... use CITRACONIC ANHYDRIDES to search CITRACONIC ANHYDRIDE 1975-78. History Note:. 91(79); was see under FURANS 1979-90; was ...
Methylmaleic anhydrides.. Entry Term(s). 2-Methylmaleic Anhydride Citraconic Anhydride Methylmaleic Anhydrides Registry Number ... use CITRACONIC ANHYDRIDES to search CITRACONIC ANHYDRIDE 1975-78. History Note. 91(79); was see under FURANS 1979-90; was ... Methylmaleic anhydrides.. Terms. Citraconic Anhydrides Preferred Term Term UI T008536. Date01/01/1999. LexicalTag NON. ... Anhydrides (1969-1974). Maleates (1972-1974). Public MeSH Note. 91; was see under FURANS 1979-90; was CITRACONIC ANHYDRIDE see ...
Methylmaleic anhydrides.. Entry Term(s). 2-Methylmaleic Anhydride Citraconic Anhydride Methylmaleic Anhydrides Registry Number ... use CITRACONIC ANHYDRIDES to search CITRACONIC ANHYDRIDE 1975-78. History Note. 91(79); was see under FURANS 1979-90; was ... Methylmaleic anhydrides.. Terms. Citraconic Anhydrides Preferred Term Term UI T008536. Date01/01/1999. LexicalTag NON. ... Anhydrides (1969-1974). Maleates (1972-1974). Public MeSH Note. 91; was see under FURANS 1979-90; was CITRACONIC ANHYDRIDE see ...
cas 616-02-4 citraconic anhydride. 616-02-4. cas 2825-82-3 tetrahydrocyclopentadiene. 2825-82-3. cas 23210-58-4 ifenprodil ...
AnhydridesAcetic AnhydridesPhthalic AnhydridesMaleic AnhydridesSuccinic AnhydridesCitraconic AnhydridesEpoxy Resins ... AnhydridesAcetic AnhydridesPhthalic AnhydridesMaleic AnhydridesSuccinic AnhydridesCitraconic AnhydridesEpoxy Resins ... glutaric anhydride price. ... glutaric anhydride with good service CAS: 91424-40-7, Anhydride glutaric anhydride anhydride ... Maleic anhydrideAcid anhydridesPhthalic AnhydrideSuccinic anhydrideTrimellitic anhydrideAceticOrganic98.0ReagentAcidsSpectra ...
N0000006590 Cisapride N0000011420 cisatracurium N0000007062 Cisplatin N0000007127 Citalopram N0000167138 Citraconic Anhydrides ... N0000168150 Malate Synthase N0000008226 Malates N0000006399 Malathion N0000166721 Maleates N0000167140 Maleic Anhydrides ... N0000006131 Succinates N0000007866 Succinic Acid N0000007876 Succinic Acids N0000166717 Succinic Anhydrides N0000007926 ... N0000007362 Acetates N0000007364 Acetazolamide N0000006517 Acetic Acid N0000008114 Acetic Acids N0000166700 Acetic Anhydrides ...
Citraconic acid can be produced via thermal isomerization of itaconic acid anhydride.. The required itaconic acid anhydride is ... Dehydration routes give itaconic acid and its anhydride.. ...
Its decomposition pathway is generally through aconitic acid, itaconic acid, and citraconic anhydride, and then converted into ...
... treatment with carboxypeptidase B or citraconic anhydride. End-group analyses revealed that the carboxyl-terminal Arg and the ... This ghosts extracted with EDTA or 2,3-dimethylmaleic anhydride at low ionic strength lack Site II activity but retain Site I ...
... maleic anhydride-alt-methyl vinyl ether) w?th ethanolamine ester of diphenylboronic acid and (2) esterification of synthesized ... pylacrylamide (NIPA), maleic and citraconic anhydrides, maleimide and chemical modification of poly(NIPA- ...
Hunziker, N.; Brun, R. 1978: Contact urticaria and dermatitis to citraconic anhydride in guinea pigs. Contact Dermatitis 4(4): ...
The nanovesicle presented a negatively charged coating (citraconic anhydride-grafted poly-L-lysine, PC) in the middle layer for ...
In this work, two out of three (citraconic anhydride, cis-aconitic anhydride, 2,3-dimethylmaleic anhydride) tested anhydrides ... In this work, two out of three (citraconic anhydride, cis-aconitic anhydride, 2,3-dimethylmaleic anhydride) tested anhydrides ... In this work, two out of three (citraconic anhydride, cis-aconitic anhydride, 2,3-dimethylmaleic anhydride) tested anhydrides ...
Citraconic T008536Citraconic Anhydrides T008537Anhydrides, Methylmaleic T008537Methylmaleic Anhydrides T008538Citrate Synthase ... Carbonic T006444Carbonic Anhydride T006445Carbon Disulfide T006445Disulfide, Carbon T006446Carbon Isotopes T006446Isotopes, ... Acetic T000240Acetic Anhydrides T000240Anhydrides, Acetic T000241Acetoacetates T000242Acetobacter T000243Acetohexamide ... Ethoxyformic T012281Ethoxyformic Anhydride T012282Pyrocarbonic Acid Diethyl Ester T012283Diethylpyrocarbonate ...
Anhydrides [D02.113] * Acetic Anhydrides [D02.113.075] * Citraconic Anhydrides [D02.113.250] * Maleic Anhydrides [D02.113.450] ... Maleic Anhydride Narrower Concept UI. M0012925. Registry Number. V5877ZJZ25. Terms. Maleic Anhydride Preferred Term Term UI ... Maleic Anhydride Registry Number. 0. Related Numbers. V5877ZJZ25. Previous Indexing. Anhydrides (1966-1976). Furans (1966-1976) ... use MALEIC ANHYDRIDES to search MALEIC ANHYDRIDE 1977-78. History Note. 91(79); was see under FURANS 1979-90; was MALEIC ...
Citraconic Anhydrides Citrate (si)-Synthase Citrates Citric Acid Citric Acid Cycle Citrinin Citrobacter Citrobacter freundii ... Acid Anhydride Hydrolases Acid Ceramidase Acid Etching, Dental Acid Phosphatase Acid Rain Acid Sensing Ion Channel Blockers ... Anhydrides Anilides Aniline Compounds Aniline Hydroxylase Aniline Mustard Anilino Naphthalenesulfonates Animal Assisted Therapy ... Acetic Anhydrides Acetoacetates Acetobacter Acetobacteraceae Acetobacterium Acetogenins Acetohexamide Acetoin Acetoin ...
... and citraconic anhydrides, as well as furylacryloyl and cinnamoyl chlorides. By using a domi... ... and citraconic anhydrides, as well as furylacryloyl and cinnamoyl chlorides. By using a domino reaction of 3-(furyl)allylamines ... β-unsaturated acid anhydrides. The vinylogues of furfurylamines, easily available in two steps from furylacroleins (3-(furyl) ... and α,β-unsaturated acid anhydrides under mild conditions, various hexahydro-4H-furo[2,3-f]isoindoles and their carboxyl ...
Anhydrides [D02.113] * Acetic Anhydrides [D02.113.075] * Citraconic Anhydrides [D02.113.250] * Maleic Anhydrides [D02.113.450] ... Acetic Anhydrides Preferred Term Term UI T000240. Date01/01/1999. LexicalTag NON. ThesaurusID NLM (1979). ... Acetic Anhydrides Preferred Concept UI. M0000133. Registry Number. 0. Scope Note. Compounds used extensively as acetylation, ... Anhydrides (1966-1978). Public MeSH Note. 91; was see under ACETIC ACIDS 1979-90. History Note. 91(79); was see under ACETIC ...
citraconic acid citramalate(2-) + citramalic acid + CMP-N-acetyl-beta-neuraminate(2-) ... isobutyric acid anhydride isobutyryl-CoA + isobutyryl-CoA(4-) isocaproic acid + isocitrate(3-) + ...
... prenomen enneahedral teleological souamosa reputableness apathies rabid mendel sacrotomy duikers lokiec ambiversive anhydrides ... greathearted impelled ecumenic cluster hypsicephaly blenching myriadly roentgenologic brontosaurus gaussbergite citraconic ...
  • The acid displays the unusual property of spontaneously forming the anhydride, which, unlike maleic anhydride, is a liquid at room temperature. (wikipedia.org)
  • For toluene reactions, observed oxygenated intermediates found included the co-eluting pair a -angelicalactone/4-oxo-2-pentenal, maleic anhydride, citraconic anhydride, benzaldehyde and p -methyl benzoquinone. (copernicus.org)
  • The maleic, phthalic, acetic and trimellitic anhydrides appeared to be the most acutely toxic of the group discussed. (cdc.gov)
  • Acetic Anhydrides" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (wakehealth.edu)
  • This graph shows the total number of publications written about "Acetic Anhydrides" by people in this website by year, and whether "Acetic Anhydrides" was a major or minor topic of these publications. (wakehealth.edu)
  • Below are the most recent publications written about "Acetic Anhydrides" by people in Profiles. (wakehealth.edu)
  • Citraconic acid is an organic compound with the formula CH3C2H(CO2H)2. (wikipedia.org)
  • Citraconic acid can be produced, albeit inefficiently, by oxidation of xylene and methylbutanols. (wikipedia.org)
  • In the laboratory, citraconic acid can be produced by thermal isomerization of itaconic acid anhydride to give citraconic anhydride, which can be hydrolyzed to citraconic acid. (wikipedia.org)
  • The required itaconic acid anhydride is obtained by dry distillation of citric acid. (wikipedia.org)
  • 7) and at acidic conditions (pH 4) the amide linkage is rapidly hydrolyzed to release the citraconic acid and free. (gbiosciences.com)
  • Information profiles on potential occupational hazards: organic anhydrides. (cdc.gov)
  • The organic anhydrides appeared to be moderately toxic with median lethal dose levels for rats ranging from 697 to 2600mg/kg. (cdc.gov)
  • In the p -xylene experiment, the products identified were E/Z-hex-3-en-2,5-dione and citraconic anhydride. (copernicus.org)
  • Injection site tumors have occurred following administration of succinic and maleic anhydrides. (cdc.gov)
  • In the laboratory, citraconic acid can be produced by thermal isomerization of itaconic acid anhydride to give citraconic anhydride, which can be hydrolyzed to citraconic acid. (wikipedia.org)
  • The required itaconic acid anhydride is obtained by dry distillation of citric acid. (wikipedia.org)
  • Its decomposition pathway is generally through aconitic acid, itaconic acid, and citraconic anhydride, and then converted into carbon dioxide and water. (polifar.com)
  • 13. Reversing the effects of formalin fixation with citraconic anhydride and heat: a universal antigen retrieval method. (nih.gov)
  • Copolymer of divinyl ether and maleic anhydride that acts as an immunostimulant with antineoplastic and anti-infective properties. (lookformedical.com)
  • The maleic, phthalic, acetic and trimellitic anhydrides appeared to be the most acutely toxic of the group discussed. (cdc.gov)
  • In this work, two out of three (citraconic anhydride, cis-aconitic anhydride, 2,3-dimethylmaleic anhydride) tested anhydrides were proven to be suitable for chemical modifications of allergens. (ac.rs)
  • G-Biosciences Carboxylation Kit With Citraconic Anhydride is designed for reversible blocking of primary amines so that directed conjugation or labeling can be performed. (gbiosciences.com)
  • Citraconic anhydride reacts with primary amines and blocks them by creating an amide linkage and a terminal carboxylate. (gbiosciences.com)