a-PHP is commonly referred to as alpha-pyrrolidinyl-hexaphenone, PHP, and alpha-PHP. The IUPAC name for a-PHP is (±)-1-Phenyl-2-(1-pyrrolidinyl)-1-hexanone. We can look at the research conducted on this research chemical. Research was conducted by ACD/Labs’, US Environmental Protection Agency’s EPISuite, and ChemAxon. Properties that were predicted by ACD/Labs showed 2 #H bond acceptors, 5 #Freely rotating bonds, index of refraction at 1.535 with a surface tension of 39.3±3.0 dyne/cm, a flash point of 127.3±12.5 °C and a boiling point of 362.4±25.0 °C at 760 mmHg.