cis-sphingosine

<2(S),3(R),4Z>-2-amino-1,3-O-isopropylidene-4-octadecene-1,3-diol

<2(S),3(R),4Z>-2-octadecanamido-4-octadecene-1,3-diol

<2(S),3(R),4Z>-1,3-O-isopropylidene-2-octadecanamido-4-octadecene-1,3-diol

<2(S),3(R),4Z>-2-tetracosanamido-4-octadecene-1,3-diol