Ephenidine
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Ephenidine (also known as NEDPA and EPE) is a
dissociative Dissociatives, colloquially dissos, are a subclass of hallucinogens which distort perception of sight and sound and produce feelings of detachment – dissociation – from the environment and/or self. Although many kinds of drugs are capable of ...
anesthetic An anesthetic (American English) or anaesthetic (British English; see spelling differences) is a drug used to induce anesthesia ⁠— ⁠in other words, to result in a temporary loss of sensation or awareness. They may be divided into two ...
that has been sold online as a
designer drug A designer drug is a structural or functional analog of a controlled substance that has been designed to mimic the pharmacological effects of the original drug, while avoiding classification as illegal and/or detection in standard drug tests. Des ...
. It is illegal in some countries as a
structural isomer In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a chemical compound, compound is another compound whose molecule has the same number of atoms of each element, but with logically distinct chemical bond, b ...
of the banned opioid drug
lefetamine Lefetamine (Santenol) is a drug which is a stimulant and also an analgesic with effects comparable to codeine. Discovery Lefetamine-related 1,2-diphenylethylamines were invented in the 1940s and showed weak analgesic activity. It was inv ...
, but has been sold in countries where it is not yet banned.


Pharmacology


Pharmacodynamics

Ephenidine and related diarylethylamines have been studied in vitro as treatments for neurotoxic injuries, and are
antagonists An antagonist is a character in a story who is presented as the chief foe of the protagonist. Etymology The English word antagonist comes from the Greek ἀνταγωνιστής – ''antagonistēs'', "opponent, competitor, villain, enemy, riv ...
of the
NMDA receptor The ''N''-methyl-D-aspartate receptor (also known as the NMDA receptor or NMDAR), is a glutamate receptor and ion channel found in neurons. The NMDA receptor is one of three types of ionotropic glutamate receptors, the other two being AMPA rece ...
(Ki = 66.4 nM for ephenidine). Ephenidine also possesses weaker affinity for
dopamine Dopamine (DA, a contraction of 3,4-dihydroxyphenethylamine) is a neuromodulatory molecule that plays several important roles in cells. It is an organic compound, organic chemical of the catecholamine and phenethylamine families. Dopamine const ...
and
norepinephrine transporter The norepinephrine transporter (NET), also known as noradrenaline transporter (NAT), is a protein that in humans is encoded by the solute carrier family 6 member 2 (SLC6A2) gene. NET is a monoamine transporter and is responsible for the sodium- ...
s (379 nM and 841 nM, respectively) as well as σ1R (629 nM) and σ2R (722 nM) binding sites.


Pharmacokinetics


Metabolism

Ephenidine's
metabolic pathway In biochemistry, a metabolic pathway is a linked series of chemical reactions occurring within a cell. The reactants, products, and intermediates of an enzymatic reaction are known as metabolites, which are modified by a sequence of chemical reac ...
consists of N-oxidation, N-dealkylation, mono- and bis-hydroxylation of the benzene ring, and hydroxylation of the phenyl ring only after N-dealkylation. The dihydroxy metabolites were conjugated by methylation of one hydroxy group, and hydroxy metabolites by glucuronidation or sulfation.


Chemistry

Ephenidine reacts with
reagent testing Reagent testing is one of the processes used to identify substances contained within a pill, usually illicit substances. With the increased prevalence of drugs being available in their pure forms, the terms "drug checking" or "pill testing" may a ...
kits to give a semi-unique array of colors which can be used to aid its identification.


Society and culture

Sweden's public health agency suggested that ephenidine be classified as a hazardous substance on 1 June, 2015. Due to that suggestion, ephenidine became a scheduled substance, in Sweden, as of 18 August, 2015. In Canada, MT-45 and its analogues were made Schedule I controlled substances. Possession without legal authority can result in maximum 7 years imprisonment. Further,
Health Canada Health Canada (HC; french: Santé Canada, SC)Health Canada is the applied title under the Federal Identity Program; the legal title is Department of Health (). is the Structure of the Canadian federal government#Departments, with subsidiary unit ...
amended the ''Food and Drug Regulations'' in May, 2016, to classify AH-7921 as a restricted drug. Only those with a law enforcement agency, a person with an exemption permit, or institutions with Minister's authorization may possess the drug.


See also

*
AD-1211 AD-1211 is an opioid analgesic drug invented in the 1970s by Dainippon Pharmaceutical Co. It is chemically a 1-substituted-4-prenyl-piperazine derivative, which is structurally unrelated to most other opioid drugs. The (''S'')-enantiomers in this ...
*
βk-Ephenidine 2-(Ethylamino)-1,2-diphenylethanone (also known as α-ethylamino-deoxybenzoin, -(Ethylamino)benzyl(phenyl)-ketone and βk-Ephenidine) is a chemical compound which was first invented in 1955, researched by ICI in 1969 as an antidepressant, and s ...
*
Diphenidine Diphenidine (1,2-DEP, DPD, DND) is a dissociative anesthetic that has been sold as a designer drug. The synthesis of diphenidine was first reported in 1924, and employed a Bruylants reaction analogous to the one that would later be used to discov ...
*
Fluorolintane Fluorolintane (also known as 2-FPPP and 2-F-DPPy) is a dissociative anesthetic drug that has been sold online as a designer drug. Fluorolintane and related diarylethylamines are antagonists of the NMDA receptor and have been studied ''in vitro'' ...
*
Lanicemine Lanicemine (AZD6765) is a low-trapping NMDA receptor antagonist that was under development by AstraZeneca for the management of severe and treatment-resistant depression. Lanicemine differs from ketamine in that it is a ''low-trapping'' NMDA re ...
*
Methoxphenidine Methoxphenidine (methoxydiphenidine, 2-MeO-Diphenidine, MXP) is a dissociative of the diarylethylamine class that has been sold online as a designer drug. Methoxphenidine was first reported in a 1989 patent where it was tested as a treatment for ...
(MXP) *
MT-45 MT-45 (IC-6) is an opioid analgesic drug invented in the 1970s by Dainippon Pharmaceutical Co. It is chemically a 1-substituted-4-(1,2-diphenylethyl)piperazine derivative, which is structurally unrelated to most other opioid drugs. Racemic MT-45 ...
*
NPDPA NPDPA (also known as isopropylphenidine or isophenidine) is a dissociative anesthetic that has been sold online as a designer drug. It was first identified in Germany in 2008, and while it has never been as widely sold as related compounds such ...
*
Remacemide Remacemide is a drug which acts as a low-affinity NMDA antagonist with sodium channel blocking properties. It has been studied for the treatment of acute ischemic stroke, epilepsy, Huntington's disease, and Parkinson's disease. Because remacemi ...
*
UWA-001 UWA-001 (also known as α-phenyl-MDMA and methylenedioxymephenidine) is a phenethylamine derivative invented at the University of Western Australia as non-toxic alternative to 3,4-methylenedioxy-''N''-methylamphetamine (MDMA) and researched as ...


References

{{Sigma receptor modulators Designer drugs Diarylethylamines Dissociative drugs Norepinephrine–dopamine reuptake inhibitors NMDA receptor antagonists Sigma receptor ligands