The molecule is an ammonium ion derivative resulting from the protonation of the amino group of (S)-codamine. The major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a (S)-codamine.
(1S)-1-[(3,4-dimethoxyphenyl)methyl]-6-methoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium-7-ol