258267-27-5

6-benzoyl-2,3,4',5'-tetrakis(methoxycarbonyl)-5,5-dimethyl-5,6-dihydrospiro(1H-thiopyrano[2,3-c]quinoline-1,2'-[1',3']-dithiole) tetramethyl 5',5'-dimethyl-6'-(phenylcarbonyl)-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'-benzoyl-5',6'-dihydro-5',5'-dimethyl-, tetramethyl ester (9CI)