312271-48-0

methyl 2-amino-7,7-dimethyl-5-oxo-4-(2-thienyl)-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate methyl 2-amino-7,7-dimethyl-5-oxo-4-(thiophen-2-yl)-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate 4H-1-Benzopyran-3-carboxylic acid, 2-amino-5,6,7,8-tetrahydro-7,7-dimethyl-5-oxo-4-(2-thienyl)-, methyl ester