The molecule is a cationic sphingoid that is the conjugate acid of 15-methylhexadecasphing-4-enine, obtained by protonation of the amino group; major species at pH 7.3. It is a conjugate acid of a 15-methylhexadecasphing-4-enine.
[(E,2S,3R)-1,3-dihydroxy-15-methylhexadec-4-en-2-yl]azanium