24237-43-2 BRN 0994847 Ethyl 4,5,6,7-tetrahydro-6-acetyl-6-aminothieno(2,3-c)pyridine-3-carboxylate Thieno(2,3-c)pyridine-3-carboxylic acid, 4,5,6,7-tetrahydro-6-acetyl-6-amino-, ethyl ester