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D-erythro-Sphingosine C-17 Cayman Chemical Item Number 10007902 Description Sphingosine is an amino alcohol most commonly characterized by an 18-carbon unsaturated hydrocarbon chain D-erythro-Sphingosine C-18 (Item No. 10007907). However, the hydrocarbon chain length of sphingosine, and the related dihydrosphingosine, can vary from 12-26 carbons in mammalian tissues.1↗,2↗ D-erythro-Sphingosine C-17 is a naturally-occurring but uncommon form of sphingosine, accounting for approximately 13% of the sphingosine in human skin.1↗ It can be phosphorylated by sphingosine kinases to produce C-17 sphingosine-1-phosphate.3↗ More commonly, sphingosine C-17 is used as an internal standard in the analysis of sphingoid compounds by chromatographic or spectrometric methods.4↗,5↗,6↗ Formal Name 2S-amino-4E-heptadecene-1,3R-diol CAS Number 6918-48-5 Molecular Formula C17H35NO2 Formula Weight 285.5 Formulation A crystalline solid Purity ≥98% Stability 2 years Storage -20°C Shipping Room temperature in continental US; may vary elsewhere SMILES OC[C@H](N)[C@H](O)/C=C/CCCCCCCCCCCC InCHI Code 1S/C17H35NO2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-17(20)16(18)15-19/h13-14,16-17,19-20H,2-12,15,18H2,1H3/b14-13+/t16-,17+/m0/s1 InCHI Key RBEJCQPPFCKTRZ-LHMZYYNSSA-N |