The molecule is an ammonium ion derivative resulting from the protonation of the tertiary amino group of (-)-(R)-19-hydroxytabersonine. The major species at pH 7.3. It is an ammonium ion derivative and an indole alkaloid cation. It is a conjugate acid of a 19-Hydroxytabersonine.
methyl (1R,12S,19R)-12-[(1R)-1-hydroxyethyl]-8-aza-16-azoniapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,9,13-pentaene-10-carboxylate