29650-16-6 4,5,6,7-Tetrahydro-2-amino-6-methylthieno(2,3-c)pyridine-3-carboxylic acid ethyl ester HCl Thieno(2,3-c)pyridine-3-carboxylic acid, 4,5,6,7-tetrahydro-2-amino-6-methyl-, ethyl ester, monohydrochloride