Thiolactic acid

Thiolactic acid Thiol chloroformates Thiolene polymers Thiols... 

Among other mercaptocarboxyhc acids, the mercaptopropionic acids have undergone a promising development. Thiolactic acid or 2-mercaptopropionic acid [79 2-5] HSCH(CH2)COOH, is manufactured by usiag 2-chloropropionic acid [598-78-7]. 3-Mercaptopropionic acid [107-96-0] HSCH2CH2COOH, competes with thioglycohc acid ia plastic additives or as modifiers ia various polymers. Mercaptopropionic acid is... 

If the injected acid itself contains iron (III), a precipitation of the asphaltic products can occur when it comes in contact with certain crude oils. This leads to practically irreversible damage of the zone treated. The amount of precipitate generally increases with the strength and concentration of the acid. Certain organic sulfur compounds, such as ammonium thioglycolate, mercaptoethanol, cysteamine, thioglycerol, cysteine, and thiolactic acid [581], can reduce the iron (HI). 

Using azolides, thiazolidindiones can be prepared by condensation of alkoxy-carbamoylimidazoles obtained in situ from O-alkylhydroxylamines and CDI with thio-glycolic acid methyl ester or the imidazolide of thiolactic acid obtained in situ from thiolactic acid and CDI [121]... 

Reeder and Rieger6 used ESR spectra to identify complex ions and to estimate formation constants for aqueous oxovanadium(iv) complexes with lactic acid, thiolactic acid, glycolic acid, and thioglycolic acid. Through the use of second-harmonic detection, which produces second-derivative spectra, the resolution was good enough that several of the individual species could be separately... 

Thiolactic acid, m22 Thiomalic acid, m25 Thiosalicylic acid, ml8 Thiosinamine, a97 2-Thioxo-4-thiazolidinone, r7 Threonine, al85 Tiglic acid, ml69... 

The oxidation of thioglycolic, thiomalic, and thiolactic acids in DMSO is first-order in tetrabutylammonium-12-tungstocobaltate(III) ion. ... 

The actual formation of pyruvic acid from various mercapturic acids upon which these formulae for cysteine and cystine were founded, was only shown later by Baumann s pupils, Konigs, Brenzinger and Schmitz, and in conjunction with Suter s observation that a-thiolactic acid was formed by the hydrolysis of horn, this formula for cystine was accepted. The results obtained, however, scarcely justified this formula as pointed out by Friedmann in 1902, who showed conclusively that the cystine, obtained from proteins, had not this constitution. 

By the action of nitrous acid in hydrochloric acid solution on bromo-phenylcystine, prepared by Baumann s method, chlorobromophenyl-thiopropionic acid was obtained, which, on reduction, gave bromophenyl-thiolactic acid. This was identical with the substance prepared from j8-iodopropionic acid and sodium bromophenylmercaptan —... 

It was first observed by Suter, in 1895, that a-thiolactic acid was formed by the hydrolysis of proteins, and it was constantly obtained by Friedmann. It was always regarded as a secondary product, but its formation from cystine could not be explained, as cystine is a /3-thiopro-pionic acid. 

Fischer and Suzuki soon afterwards showed that Neuberg and Mayer s stone cystine contained tyrosine, and that its different behaviour to protein cystine was due to the presence of this compound. Rothera also could find no difference between stone cystine and protein cystine, and further, Gabriel s synthesis of isocysteine or a-thio-/8-aminopropionic acid and isocystine, which had quite different properties to cystine, though the two were much alike in many of their reactions, proved that stone cystine and protein cystine must be identical substances. Finally, it has been shown by Friedmann that a-thiolactic acid, ammonia PT. I. 4... 

Thiomandelic and thiolactic acids are nitrosated to give S-nitroso derivatives which are dehydrated in situhy dicyclohexylcarbodiimide to form 1,3,2-oxathiazoline rings (Scheme 13) <72CB188,81LA1025, 92USP5087631). Structurally, the products obtained may be regarded as S-analogues of sydnones. 

The meso-ionic 1,3-thiazole-S-thione (112) is formed from N-thiobenzoylproline and warm thiolactic acid. 

A logical extension of the synthetic strategy underlying our solid-phase approach toward 1,5-benzothiazepinones was to replace the [3-mercapto acids (cysteine, penicillamine) by a-mercapto acids, such as mercaptoacetic acid 54a or thiolactic acid 54b. This change would facilitate access to the corresponding [6,6]-fused systems, i, e. 1,4-benzothiazin-3-ones 57. As with the benzothiazepines, no solid-phase synthesis of benzothiazines has been reported to date. 

Thiolactic acid, m21 Thiomalic acid, m23 4,4 -Thioresorcinol, tl45 Thiosalicyclic acid, ml 6 Thiosinamine, alOl 2-Thixo-4-thiazolidinone, r3 Threonine, al 87 Tiglic acid, ml 61... 

Water, strontium hydroxide, glycerin, cetearyl alcohol, guanidine carbonate, thiolactic acid, CETEARETH-33, silica, titanium dioxide, BHA, EDTA, parfum, potassium hydroxide and squalane. 

Fig. 1.8. EPR spectra of thiolactic acid modified Ti02 colloids illuminated with 308 nm excimer laser at 4.3 K and annealed at different temperatures indicated at the figure...

Plants. Metabolism in maize leads to thiolactic acid besides above Soil. Rapidly degraded in soil, probably through microbial action, with DT50 8-43 days, depending upon soil type and weather conditions. Photolysis DTJ0 on soil a. 7.8 days... 

THIOFANOX THIOGLYCOL TNIOCLTCOLIC ACID THIOLACTIC ACID THIOMETON... 

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