a-PHP is similar to compound pyrovalerone. 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. Since it is an analog of pyrovalerone, we can look at the research conducted on this research chemical to learn more about a-PHP.