CAS 58909-84-5 appears in our catalog under these names: N–Stearoylsphingomyelin, 18:0 SM (D18:1/18:0), N-Stearoylsphingomyelin, N-Stearoylsphingomyelin, 98.60%. Offered by: GLPBio, Sigma-Aldrich, Chemat, MedChemExpress. Available pack sizes: 1mg, 10MG, 5MG, 1 mg.