3-O-Methyl-Sphingomyelin is a novel selective inhibitor of neutral sphingomyelinase, (Ki=37 µM). It is cell-permeable and does not inhibit acid sphingomyelinase. Purity: ≥98% (TLC). Solubility: Soluble in ethanol (>25 mg/ml) or DMSO (20 mg/ml@50°C). Long Term Storage: -20°C.