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