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. 7709-58-2, Name is 4-(Chloromethyl)thiazole hydrochloride, molecular formula is C4H5Cl2NS. In a Patent，once mentioned of 7709-58-2, SDS of cas: 7709-58-2
C (2) -HETEROARYLMETHYL-C (4) -PYRAZINYL-2-YL ACYL PYRROLIDINE COMPOUNDS AND THEIR USE FOR TREATING VIRAL INFECTIONS, ESPECIALLY HEPATITIS C VIRUS
Anti-viral agents of Formula (Ia) : wherein A represents hydroxy; B represents -C(O)R3; D represents 1,3-thiazol-2-yl or 5-methylisoxazol-3-yl; E represents pyrazin-2-yl; G represents 1,3-thiazol-4-ylmethyl or 1H-pyrazol-1-ylmethyl; R3 represents 3-bromo-4-tert-butylphenyl or 5-bromo-4-tert-butyl-2-fluorophenyl; and salts, solvates and esters thereof; provided that when A is esterified to form -OR where R is selected from branched chain alkyl, then R is other than tert-butyl, processes for their preparation and their use in HCV treatment are provided.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.SDS of cas: 7709-58-2. In my other articles, you can also check out more blogs about 7709-58-2
Reference：
Thiazole | C3H4786NS – PubChem,
Thiazole | chemical compound | Britannica