A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 121-66-4, Name is 5-Nitrothiazol-2-amine, molecular formula is C3H3N3O2S. In a Patent，once mentioned of 121-66-4, Recommanded Product: 5-Nitrothiazol-2-amine
Compounds of formula (III): STR1 wherein R5 is a single substituent in position 2 or 3 of the phenyl ring and when in the 2-position R5 is a chlorine atom, a methyl group or a nitro group; and R6 is a hydrogen atom or a CO.CH3 group may be prepared by methods analogous to those known in the art, for example, by reaction of the corresponding nitrothiazolyl benzamide with the corresponding halo(di)acetamide. The compounds of formula (III) have schistosomicidal activity and may be administered either as the compound alone or as a pharmaceutical formulation.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Recommanded Product: 5-Nitrothiazol-2-amine. In my other articles, you can also check out more blogs about 121-66-4
Reference：
Thiazole | C3H9497NS – PubChem,
Thiazole | chemical compound | Britannica