(R)-3,3,3',3'-tetramethyl-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-dicarboxylic acid

(R)-3,3,3',3'-tetramethyl-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-dicarboxylic acid · CAS 2270175-35-2