Diospyrol (CAS NO.17667-23-1) is also called 4-06-00-07839 (Beilstein Handbook Reference) ; 6,6'-Dimethyl-(2,2'-binaphthalene)-1,1',8,8'-tetrol ; BRN 2064741 ; NSC 294435 ; (2,2'-Binaphthalene)-1,1'-8,8'-tetrol, 6,6'-dimethyl- .