17,18-Secoyohimban-16-carboxylic acid, 19,20-didehydro-17-hydroxy-, methyl ester 17,18-Secoyohimban-16-carboxylic acid, 19,20-didehydro-17-hydroxy-, methyl ester, (16S,19E)- 6519-27-3 Corynan-16-carboxylic acid, 19,20-didehydro-17-hydroxy-, methyl ester, (16R,19E)- Corynan-17-oic acid, 19,20-didehydro-16-(hydroxymethyl)-, methyl ester ISOSITSKIAKINE ISOMER K060 Isositsirikine NSC338932