73623-39-9 ACETANILIDE, N-(2-(4-FORMYLTHIAZOLYL))-, 2,4-DINITROPHENYLHYDRAZONE N-(2-(4-Formylthiazolyl))acetanilide 2,4-dinitrophenyl-hydrazone N-(4-(2,4-Dinitrophenyl)hydrazonomethyl-2-thiazolyl)acetanilide