Mercaptosuccinic

Thiomahc acid [70-49-5] (mercaptosuccinic acid), C H O S, mol wt = 150.2, is a sulfur analogue of malic acid. The properties of the crystalline, soHd thiomalic acids ate given in Table 6. The racemic acid has the following acid dissociation constants at 25°C pTf i — 3.30 pffc2 — 4.94. 

C3H5CIO 79-03-8) see Betamethasone butyrate propionate Betamethasone dipropionate Docarpamine Erythromycin estolate Erythromycin monopropionate mercaptosuccinate Flavoxate Fluticasone propionate Naproxen Prednicarbate Quinethazone 2-propionyloxybenzoic acid (Ci H,o04 6328-44-5) see Flavoxate... 

C4H5O4S 70-49-5) see Erythromycin monopropionate mercaptosuccinate Sodium aurothiomalate thionyl bromide... 

The oxidation of 2-mercaptosuccinic acid by V(V) proceeds via a coloured intermediate 460, 520 nm) to give the disulphide. The following scheme was put forward ... 

Figure 3.89 Cyclic voltammograms of 500 pm cytochrome c at a gold electrode modified by (a) 2-mercaptopyridine, (b> 2-mercaptosuccinic acid, 4,4 -dithiobis(butanoic acid), (d) 4-mercaploaniline. pH 7.0 phosphate buffer +0.1 M NaC104. Scan rale 50mVs . From Allen...

It has been established that by mixing derivatives of acids having opposite rotation, the compounds had opposite, configurations. The (+) malic acid (XXIV) and (-) mercaptosuccinic acid (XXV) had opposite configurations. 

Note According to the U.S. EPA (1989), technical malathion contains the following impurities diethyl fumarate (0.90%), diethylhydroxysuccinate (0.05%), 0,0-dimethyl phosphorothioate (0.05%), aao-trimethyl phosphorothioate (0.45%), aa5-trimethyl phosphorothioate (1.20%), ethyl nitrite (0.03%), Diethyl bis(ethoxycarbonyl) mercaptosuccinate (0.15%), 5-1,2-diethyl 0,5-dimethyl phosphorothioate (0.20%), 5 (i-methoxycarbonyl-2-ethoxycarbonyl)ethyl 0,0-di-meth-yl phosphorothioate (0.60%), Bis(0,0-dimethyl thionophosphoryl) sulfide (0.30%), Diethyl meth-ylthiosuccinate (1.00%), malaoxon [5-l,2-bis(ethoxycarbonyl) ethyl-0,0-dimethyl phosphorothioate] (0.10%), and diethyl ethylthiosuccinate (0.10%). 

Residues identified on field-treated kale other than malathion included the oxygen analog and the impurity identified by nuclear magnetic resonance and mass spectrometry as ethyl butyl mercaptosuccinate, 5-ester with 0,0-dimethyl phosphorodithioate. This compound did not form as an alteration product of malathion but was present in the 50% emulsifiable concentrate (Gardner et al, 1969). 

Diethyl mercaptosuccinic acid O.O-dimethyl phosphorodithioate. see Malathion Diethyl mercaptosuccinate. 0,0-dimethyl phosphorodithioate. see Malathion... 

PCB-1242, 2.4.5-Trichlorobinhenyl. p-Xylene Ethyl bromide, see Methyl bromide Ethylbutylamine, see Pebulate Ethyl butyl mercaptosuccinate, 5-ester with... 

An pFl-dependent coordination isomerism has been observed for the tumor targeting rhenium(V) 0x0 complex [ReO(DMSA)2] (DMSA = 2,3-mercaptosuccinate). In solution the crystallo-graphically characterized syn,endo-isomQx (87a) slowly isomerizes into the anti- (87b) and the iyn,exo-isomers (87c) which has consequences for the biodistribution of the potential pharmaceutical (Scheme 10). The conversion rate decreases with increasing pH suggesting an acid catalyzed reaction. The syn,exo-comy> ex is favored in alkaline solutions (pH > 8.4) which can be understood in terms of the repulsions between the deprotonated carboxylic groups and the 0x0 ligand. 

To reach this target, bis-aminothiazoles, aromatic aldehydes, and 2-mercapto-propionic acid or 2-mercaptosuccinic acid were adsorbed on the neutral alumina support and were microwave-irradiated under solvent-free conditions (Scheme 56). The authors reported the high level of the reaction conversion, which gave the desired products 119 in excellent yields for a rather short time (up to 7 min). 

Synonyms Diethyl mercaptosuccinate, S-ester with 0,0-dimethyl phosphorodithioate Malathon carbophos Cythion 4049... 

A telechelic polystyrene containing two carboxyl groups at one end of a polymer can be used as a macromonomer in a step polymerization with a diol or diamine to yield a polyester or polyamide containing graft chains of polystyrene. The required telechelic polymer is obtained by radical polymerization of styrene in the presence of 2-mercaptosuccinic acid. 

Mercaptosuccinic Acid, S-Ester with 0,0-Dimethyl Dithiophosphate Mercurialin Mercuric Acetate Mercuric Ammonium Chloride Mercuric Chloride Mercuric Chloride. Ammoniated Mercuric Cyanide Mercuric Iodide Mercuric Iodide, Red Mercuric Nitrate Mercubic Nitrate Monohydrate Mercuric Oxide... 

Another interesting study describes the synthesis of large hexagonal close-packed Au NCSs from water-soluble mercaptosuccinic acid (MSA)-coated Au nanoparticles used as the building units. Au N Ps that form the superlattices can be interconnected by interpartide chemical bonding thanks to the mercaptosuccinic acid molecules over the Au nanoparticle surface [168] (Figure 3.15). 

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