(-)-threo-Dihydrosphingosine (2S,3S)-2-Amino-1,3-octadecanediol 1,3-Octadecanediol, 2-amino-, (2S,3S)- 1,3-Octadecanediol, 2-amino-, (S-(R*,R*))- 1,3-Octadecanediol, 2-amino-, L-threo- 15639-50-6 L-(-)-threo-Sphingnine L-threo-2-Amino-1,3-octadecanediol SAFINGOL SPC 100270 Safingol [USAN:INN]