2-[[[(2R)-2,3-Dihydroxypropoxy]hydroxyphSphinyl]oxy]-N,N,N-trimethylethanaminium InnerSalt-d9; Brezal-d9; Cereton-d9; Cholicerin-d9; Choline AlfScerate-d9; Cholitiline-d9; Delecit-d9; GlycerylphSphocholine-d9; GlycerylphSphorylcholine-d9; L-α-GPC-d9; L-α-GlycerophSphocholine-d9; L-α-GlycerophSphorylcholine-d9; L-α-GlycerylphSphorylcholine-d9; O-Sn-glycero-3-PhSphoryl)choline-d9;Sn-GlycerophSphocholine-d9;Sn-Glycero-3-phSphorylcholine-d9;Sn-glycero-3-phSphocholine-d9;