331973-30-9

tetramethyl 6'-[3-(3,4-dimethoxyphenyl)acryloyl]-5',5',9'-trimethyl-5',6'-dihydrospiro(1,3-dithiole-2,1'-[1'H]-thiopyrano[2,3-c]quinoline)-2',3',4,5-tetracarboxylate tetramethyl 6'-[(2E)-3-(3,4-dimethoxyphenyl)prop-2-enoyl]-5',5',9'-trimethyl-5',6'-dihydrospiro[1,3-dithiole-2,1'-thiopyrano[2,3-c]quinoline]-2',3',4,5-tetracarboxylate Spiro[1,3-dithiole-2,1'-[1H]thiopyrano[2,3-c]quinoline]-2',3',4,5-tetracarboxylic acid, 6'-[3-(3,4-dimethoxyphenyl)-1-oxo-2-propenyl]-5',6'-dihydro-5',5',9'-trimethyl-, tetramethyl ester (9CI)