DOPE, also known as 1,2-Dioleoyl-sn-glycero-3-PE or 1,2-DOPE, is a synthetic analog of naturally-occurring PE containing 18:1 fatty acids at the sn-1 and sn-2 positions. 1,2-DOPE can be used as an emulsifier to facilitate DNA-liposome complex transport across membranes. It is used in combination with cationic phospholipids to increase efficiency during DNA transfection studies as a non-viral method of gene delivery. Reagent grade, for research use only.