α-Pyrrolidinopropiophenone (α-PPP), is a stimulant drug. It is similar in structure to the appetite suppressant diethylpropion and has analogous effects in animals. Little is known about this compound, but it has been detected by laboratories in Germany as an ingredient in "ecstasy" tablets seized by law enforcement authorities. This drug has been found to produce stimulant effects in animals and produces highly stimulating effects in humans, based on the experiences of the individuals who have tried it. Most of the individuals who have tried it prefer α-PVP to it, but prefer this drug over α-PVT. It is said to lack euphoria compared to α-PVP.
Phthalimidopropiophenone is a chemical intermediate used in the synthesis of cathinone. It has been found to be sold on the illicit market as a controlled substance analogue, but little is currently known about its pharmacology or toxicology.
Ethcathinone, also known as ethylpropion or ETH-CAT, is a stimulant drug of the phenethylamine, amphetamine, and cathinone chemical classes. It is an active metabolite of the prodrug diethylcathinone and is fully responsible for its effects. Ethcathinone has been identified as an ingredient in both quasi-legal "party pills", and, along with mephedrone, has also been reported as having been sold as "ecstasy" in the Australian city of Cairns.
α-Pyrrolidinopentiophenone (α-PVP), also known as α-pyrrolidinovalerophenone, O-2387, β-keto-prolintane, prolintanone, or desmethylpyrovalerone, 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.
4'-Methyl-α-pyrrolidinohexiophenone (MPHP) is a stimulant compound which has been reported as a novel designer drug. It is closely related to pyrovalerone, being simply its chain-lengthened homologue. In the pyrrolidinophenone series, stimulant activity is maintained so long as the positions of the aryl, ketone and pyrrolidinyl groups are held constant, while the alkyl backbone can be varied anywhere between three and as many as seven carbons, with highest potency usually seen with the pentyl or isohexyl backbone, and a variety of substituents are tolerated on the aromatic ring.
Substituted cathinones, or simply cathinones, which include some stimulants and entactogens, are derivatives of cathinone. They feature a phenethylamine core with an alkyl group attached to the alpha carbon, and a ketone group attached to the beta carbon, along with additional substitutions. Cathinone occurs naturally in the plant khat whose leaves are chewed as a recreational drug.
Pentylone is a stimulant developed in the 1960s. It is a substituted cathinone that has been identified in some samples of powders sold as "NRG-1", along with varying blends of other cathinone derivatives including flephedrone, MDPBP, MDPV, and 4-MePPP. It was also found in combination with 4-MePPP being sold as "NRG-3". Reports indicate side effects include paranoia, agitation, and insomnia, with effects lasting for several days at high doses.
4-Methylethcathinone or 4-MEC is a chemical that bears a chemical resemblance to mephedrone. Due to its similarity to mephedrone, it is thought to be a stimulant and entactogen drug of the phenethylamine, amphetamine, and cathinone chemical classes. It has been marketed alone or in mixtures with other substituted cathinones under the name "NRG-2", although other blends such as "NRG-1" may have been more ambiguous with their ingredients.
Pentedrone 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.
AB-FUBINACA (AMB-FUBINACA) is a psychoactive drug that acts as a potent agonist for the cannabinoid receptors, with Ki values of 0.9 nM at CB1 and 23.2 nM at CB2 and EC50 values of 1.8 nM at CB1 and 3.2 nM at CB2. It was originally developed by Pfizer in 2009 as an analgesic medication but was never pursued for human use. In 2012, it was discovered as an ingredient in synthetic cannabinoid blends in Japan, along with a related compound AB-PINACA, which had not previously been reported.
3-Methylmethcathinone (3-MMC), also known as metaphedrone, is a designer drug from the substituted cathinone family. 3-MMC is a monoamine transporter substrate that potently releases and inhibits the reuptake of dopamine and norepinephrine, as well as displaying moderate serotonin releasing activity.
AB-CHMINACA is an indazole-based synthetic cannabinoid. It is a potent agonist of the CB1 receptor (Ki = 0.78 nM) and CB2 receptor (Ki = 0.45 nM) and fully substitutes for Δ9-THC in rat discrimination studies, while being 16x more potent. Continuing the trend seen in other cannabinoids of this generation, such as AB-FUBINACA and AB-PINACA, it contains a valine amino acid amide residue as part of its structure, where older cannabinoids contained a naphthyl or adamantane residue.
α-Pyrrolidinohexiophenone is a synthetic stimulant drug of the cathinone class developed in the 1960s which has been reported as a novel designer drug.
4'-Methoxy-α-pyrrolidinopentiophenone is a stimulant drug of the cathinone class that has been sold online as a designer drug.
3',4'-Dimethoxy-α-pyrrolidinopentiophenone is a synthetic stimulant drug of the cathinone class that has been sold online as a designer drug. It is a relatively weak inhibitor of serotonin reuptake and has little affinity in vitro for dopamine or noradrenaline transporters.
4-Chloromethcathinone is a stimulant drug of the cathinone class that has been sold online as a designer drug.
N-Ethylhexedrone (also known as α-ethylaminocaprophenone, N-ethylnorhexedrone, hexen, and NEH) is a stimulant of the cathinone class that acts as a norepinephrine–dopamine reuptake inhibitor (NDRI) with IC50 values of 0.0978 and 0.0467 μM, respectively. N-Ethylhexedrone was first mentioned in a series of patents by Boehringer Ingelheim in the 1960s which led to the development of the better-known drug methylenedioxypyrovalerone (MDPV). Since the mid-2010s, N-ethylhexedrone has been sold online as a designer drug. In 2018, N-ethylhexedrone was the second most common drug of the cathinone class to be identified in Drug Enforcement Administration seizures.
3-Chloromethcathinone (3-CMC), also known as clophedrone, is a synthetic substance belonging to the cathinone class of psychoactive compounds. It is very similar in structure to other methcathinone derivatives such as 3-MMC and 4-CMC. Unlike cathinone, which occurs naturally in the khat plant Catha edulis, 3-CMC is not found in nature and is solely produced through chemical synthesis.
α-Pyrrolidinoisohexanophenone is a stimulant drug of the cathinone class that has been sold online as a designer drug. It acts as a potent norepinephrine-dopamine reuptake inhibitor (NDRI). In July 2016 α-PiHP was first identified as a designer drug when it was reported to the EMCDDA by a forensic laboratory in Slovenia. It is a positional isomer of pyrovalerone, with the methyl group shifted from the 4-position of the aromatic ring to the 4-position of the acyl chain. Similarly to other cathinones, use of α-PiHP can result in compulsive redosing, addiction, anxiety, paranoia, and psychosis.
5-BPDi (Indanyl-α-PHP) is a substituted cathinone derivative with stimulant effects which has been sold as a designer drug, first reported in 2015.
