332044-17-4

tetramethyl 5,5,8,9-tetramethyl-6-(thien-2-ylcarbonyl)-5,6-dihydrospiro(1H-thiopyrano[2,3-c]quinoline-1,2'-[1,3]-dithiole)-2,3,4',5'-tetracarboxylate tetramethyl 5',5',8',9'-tetramethyl-6'-(thiophen-2-ylcarbonyl)-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, 5',6'-dihydro-5',5',8',9'-tetramethyl-6'-(2-thienylcarbonyl)-, tetramethyl ester (9CI)