3413-58-9 4-23-00-03195 (Beilstein Handbook Reference) 522-60-1 BRN 0092227 Cinchonan-9-ol, 6'-ethoxy-10,11-dihydro-, (8-alpha,9R)- (9CI) EINECS 208-333-5 Ethylhydrocupreine Hydrocinchonidine, 6'-ethoxy- (7CI) Hydrocupreine ethyl ether Hydrocupreine, O(sup 6')-ethyl- Numoquin Optochin Optoquine