is conjugate acid of strychnine indole alkaloid cation strychnine(1+) 10-oxostrychnidin-19-ium 335.420 An indole alkaloid cation obtained by protonation of the tertiary amino group of strychnine. C1[C@@]2([NH+]3CC[C@@]42[C@]5(N(C=6C4=CC=CC6)C(C[C@]7([C@@]5([C@@]1(C(=CCO7)C3)[H])[H])[H])=O)[H])[H] C21H23N2O2 CHEBI:90700 InChI=1S/C21H22N2O2/c24-18-10-16-19-13-9-17-21(6-7-22(17)11-12(13)5-8-25-16)14-3-1-2-4-15(14)23(18)20(19)21/h1-5,13,16-17,19-20H,6-11H2/p+1/t13-,16-,17-,19-,20-,21+/m0/s1 QMGVPVSNSZLJIA-FVWCLLPLSA-O chebi_ontology strychnine cation strychninium ion