Sphingosine1-phosphatebiotinisrelativelystableatroomtemperatureasasolid.Itisbeststoredasadriedsolid,protectedfromlightat-20oC.Solutions/emulsionsofsphingosinesshouldbekeptat-20oC.Storageinbasicbuffers(pH>9.0)oracidicbuffers(pH< 4.0) may cause decomposition.