Alpha-Propylphenethylamines

α-Pyrrolidinovalerophenone (α-PVP), also known as α-pyrrolidinopentiophenone , O-2387, β-keto-prolintane, prolintanone, or desmethylpyrovalerone, or colloquially as flakka or gravel, is a synthetic stimulant of the cathinone class developed in the 1960s that has been sold as a designer drug and often consumed for recreational reasons. α-PVP is chemically related to pyrovalerone and is the ketone analog of prolintane.

Methylenedioxypyrovalerone (MDPV) is a stimulant of the cathinone class that acts as a norepinephrine–dopamine reuptake inhibitor (NDRI).

Pyrovalerone (Centroton, 4-Methyl-β-keto-prolintane, Thymergix, O-2371) is a central nervous system (CNS) stimulant that acts as a norepinephrine–dopamine reuptake inhibitor (NDRI). It was developed in the 1980s and had briefly been approved in Spain and France for chronic fatigue or lethargy and as an appetite suppressant, but was withdrawn from both markets around 2001 due to safety concerns including problems with abuse and dependence. It is closely related on a structural level to a number of other cathinone stimulants, such as α-PVP, MDPV and prolintane.

Prolintane is a central nervous system (CNS) stimulant and norepinephrine–dopamine reuptake inhibitor (NDRI) of the phenylalkylpyrrolidine family developed in the 1950s. Being an amphetamine derivative, it is closely related in chemical structure to other drugs such as pyrovalerone, MDPV, and propylhexedrine, and has a similar mechanism of action. Many cases of prolintane abuse have been reported.

Pentedrone (also known as α-methylaminovalerophenone) is a stimulant of the cathinone class that has been sold as a designer drug and has been found since 2010 as an ingredient in a number of "bath salt" mixes sold as legal highs.

Naphyrone, also known as O-2482 and naphthylpyrovalerone, is a stimulant drug of the cathinone and naphthylaminopropane families. It was derived from pyrovalerone and acts as a serotonin–norepinephrine–dopamine reuptake inhibitor (SNDRI). Naphyrone has been reported as a novel designer drug. No safety or toxicity data is available on the drug.

MBDP, also known as '''N-methyl-1,3-benzodioxolylpentanamine, 3,4-methylenedioxy-α-propyl-N-methylphenethylamine, methyl-K, or UWA-091', is a psychoactive drug of the phenethylamine, phenylisobutylamine, and MDxx families. It is the N''-methyl analogue of BDP (K).

1-Phenyl-2-propylaminopentane (PPAP), also known as 'α,N-dipropylphenethylamine (DPPEA) and by the developmental code name MK-306', is an experimental drug related to selegiline which acts as a catecholaminergic activity enhancer (CAE).

EBDP, also known as '''N-ethyl-1,3-benzodioxolylpentanamine, 3,4-methylenedioxy-N-ethyl-α-propylphenethylamine, or ethyl-K', is a psychoactive drug of the phenethylamine, amphetamine, and MDxx families. It is the N''-ethyl analogue of BDP (K).