The molecule is a cationic sphingoid that is the conjugate acid of 4-hydroxy-15-methylhexadecasphinganine, obtained by protonation of the amino group; major species at pH 7.3. It is a conjugate acid of a 15-methylhexadecaphytosphingosine.
[(2S,3S,4R)-1,3,4-trihydroxy-15-methylhexadecan-2-yl]azanium