14883-83-1 4H-Indolo(2,3-a)pyrano(3,4-g)quinolizine-16-carboxylic acid, 4a,5,7,8,13,13B,14,14a-octahydro-11-methoxy-4-methyl-, methyl ester NSC72290 Oxayohimban-16-carboxylic acid, 16,17-didehydro-11-methoxy-19-methyl-, methyl ester, (19.beta.,20.alpha.)- Raunitidine