The molecule is the conjugate acid of O-demethylpuromycin; major species at pH 7.3. It is an organic cation and an ammonium ion derivative. It is a conjugate acid of an O-demethylpuromycin.
[(2S)-1-[[(2S,3S,4R,5R)-5-[6-(dimethylamino)purin-9-yl]-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl]amino]-3-(4-hydroxyphenyl)-1-oxopropan-2-yl]azanium