ChEBI: N-octadecanoylsphingosine 1-phosphate is a ceramide 1-phosphate that is the N-octadecananoyl (stearoyl) derivative of sphingosine. It is functionally related to a sphingosine and an octadecanoic acid. It is a conjugate acid of a N-octadecanoylsphingosine 1-phosphate(2-).