The molecule is a phosphosphingolipid that is C20 phytosphingosine bearing a phospho group at position 1. It derives from a C20 phytosphingosine. It is a conjugate base of a C20 phytosphingosine 1-phosphate(1-).
[(2S,3S,4R)-2-amino-3,4-dihydroxyicosyl] dihydrogen phosphate