Wikipedia
Perflenapent
Perflenapent ( INN/ USAN), or perfluoropentane (PFP), is a fluorocarbon. It has several biomedical applications including: propellant for pressurized metered dose inhalers; gas core in microbubble ultrasound contrast agents; and occlusion therapy via the conversion of nanometer liquid droplets into micrometer sized gas microbubbles ( acoustic droplet vaporization).