Lysophosphatidylcholine 18:2-d 9 is deuterium labeled Lysophosphatidylcholine 18:2. Lysophosphatidylcholine 18:2 (1-Linoleoyl-2-Hydroxy-sn-glycero-3-PC), a lysophospholipid, is a potential biomarker identified from insulin resistance (IR) polycystic ovary