The molecule is the cationic sphingoid resulting from the protonation of the amino group of sphingosine. It has a role as a human metabolite. It is a conjugate acid of a sphingosine. It is an enantiomer of a L-erythro-sphingosine(1+).
[(E,2S,3R)-1,3-dihydroxyoctadec-4-en-2-yl]azanium