Synonyms: Actinorhodin(7CI,8CI); [8,8'-Bi-1H-naphtho[2,3-c]pyran]-3,3'-diacetic acid,3,3',4,4',5,5',10,10'-octahydro-6,6',9,9'-tetrahydroxy-1,1'-dimethyl-5,5',10,10'-tetraoxo-,[1R-[1a,3b,8(1'R*,3'S*)]]-; 1H-Naphtho[2,3-c]pyran, bimol.deriv.; Actinorhodine