The molecule is a sphingoid consisting of (8E)-sphing-8-enine bearing an additional (R)-hydroxy substituent at the 4-position. It derives from a sphing-8-enine. It is a conjugate acid of a 4-hydroxysphing-8-enine(1+).
(E,2S,3S,4R)-2-aminooctadec-8-ene-1,3,4-triol