172516-47-1

Ethyl 6,6-dimethyl-3-hydrazino-4-oxo-4,5,6,7-tetrahydrobenzo[c]thiophene-+ Ethyl 3-hydrazinyl-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydrobenzo[c]thiophene-1-carboxylate Ethyl 6,6-dimethyl-3-hydrazino-4-oxo-4,5,6,7-tetrahydrobenzo(c)thiophene-1-carboxylate, tech. Benzo[c]thiophene-1-carboxylic acid, 3-hydrazinyl-4,5,6,7-tetrahydro-6,6-dimethyl-4-oxo-, ethyl ester