CAS 213331-17-0 appears in our catalog under these names: 16:0-7 Doxyl pc, 3-Oxazolidinyloxy, 2-[(8R)-11-hydroxy-15,15-dimethyl-11-oxido-6-oxo-8-[[(1-oxohexadecyl)oxy]methyl]-7,10,12-trioxa-15-azonia-11-phosphahexadec-1-yl]-4,4-dimethyl-2-undecyl-, inner salt, 98%. Offered by: Biosynth, Sigma-Aldrich, Chemat Brand. Available pack sizes: 5mg, 1mg, 10mg, 25mg, 50mg, on request.