(9,9'-Bianthracene)-2,2'-dicarboxylic acid, 5,5'-bis(beta-D-glucopyranosyloxy)-9,9',10,10'-tetrahydro-4,4'-dihydroxy-10,10'-dioxo-, (R*,R*)- (VAN) (9CI) 81-27-6 EINECS 201-339-9 NSC 112929 Sennoside A