Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Agricultural and Biological Chemistry called Asymmetric synthesis of S-carboxymethyl-L-cysteine by a chemicoenzymic method, Author is Yokozeki, Kenzo; Eguchi, Chikahiko; Kamimura, Akira; Kubota, Koji, which mentions a compound: 2150-55-2, SMILESS is O=C(C1N=C(N)SC1)O, Molecular C4H6N2O2S, Reference of 2-Amino-4,5-dihydrothiazole-4-carboxylic acid.
A chemienzymic method is developed for production of S-carboxymethyl-L-cysteine (I) from DL-2-aminothiazoline-4-carboxylic acid (II) in the presence of ClCH2CO2H using a hydrolyzing system. The carboxymethylation of L-cysteine with ClCH2CO2H to I proceeded effectively at 26° and pH ≥8.0, the yield reaching nearly 100%. The carboxymethylation of II with ClCH2CO2H was not observed Next, the production of I from II in the presence of ClCH2CO2H was examined using rinsed cells of Pseudomonas desmolytica AJ-11898. About 10 g I/L was produced from 18 g II/L in 8 h, the molar yield being 45%. This finding shows that the aminothiazolinecarboxylate racemase in P. desmolytica AJ-11898 may be inhibited by the ClCH2CO2H added to the reaction mixture In fact, the II remaining in the reaction mixture was in the D-form. Moreover, the yield of L-cysteine from DL-II in the absence of ClCH2CO2H was ∼50% when cells of AJ-11898 pretreated with SH reagents were used as the enzyme source.
In addition to the literature in the link below, there is a lot of literature about this compound(2-Amino-4,5-dihydrothiazole-4-carboxylic acid)Reference of 2-Amino-4,5-dihydrothiazole-4-carboxylic acid, illustrating the importance and wide applicability of this compound(2150-55-2).