4-Phenyl-4-(1-piperidinyl)cyclohexanol Tags: Chemical Compound, Chemical Substance.4-Phenyl-4-(1-piperidinyl)-cyclohexanol also known as PPC is an organic chemical which is a metabolite of phencyclidine (PCP). It can be detected in the hair of PCP users.PPC has been shown to cause increases in locomotor activity in lab mice. thumbnail IUPAC name 4-Phenyl-4-(1-piperidinyl)cyclohexanol Learn more... Loading...