Empathogens or entactogens are a class of psychoactive drugs that induce the production of experiences of emotional communion, oneness, relatedness, emotional openness—that is, empathy or sympathy—as particularly observed and reported for experiences with 3,4-methylenedioxymethamphetamine (MDMA). This class of drug is distinguished from the classes of hallucinogen or psychedelic, and amphetamine or stimulants. Major members of this class include MDMA, MDA, MDEA, MDOH, MBDB, 5-APB, 5-MAPB, 6-APB, 6-MAPB, methylone, mephedrone, GHB, αMT, and αET, MDAI among others. Most entactogens are phenethylamines and amphetamines, although several, such as αMT and αET, are tryptamines. When referring to MDMA and its counterparts, the term MDxx is often used. Entactogens are sometimes incorrectly referred to as hallucinogens or stimulants, although many entactogens such as ecstasy exhibit psychedelic or stimulant properties as well.
Rasagiline, sold under the brand name Azilect among others, is a medication which is used in the treatment of Parkinson's disease. It is used as a monotherapy to treat symptoms in early Parkinson's disease or as an adjunct therapy in more advanced cases. The drug is taken by mouth.
Indanorex (Dietor) is a stimulant drug which was developed in the 1970s. It has appetite suppressant effects and also has antihypoglycemia effects.
MEAI, also known as 5-methoxy-2-aminoindane (5-MeO-AI), is a monoamine releasing agent of the 2-aminoindane group. It specifically acts as a selective serotonin releasing agent (SSRA). The drug is under development for the treatment of alcoholism, cocaine use disorder, metabolic syndrome, and obesity under the developmental code name CMND-100.
MDAI, also known as 5,6-methylenedioxy-2-aminoindane, is an entactogen drug of the 2-aminoindane group which is related to MDMA and produces similar subjective effects.
5-Methoxy-6-methyl-2-aminoindane (MMAI) is a drug of the 2-aminoindane group developed in the 1990s by a team led by David E. Nichols at Purdue University. It acts as a less neurotoxic and highly selective serotonin releasing agent (SSRA) and produces entactogenic effects in humans. It has been sold as a designer drug and research chemical online since 2010.
5,6-Methylenedioxy-N-methyl-2-aminoindane (MDMAI), is a drug developed in the 1990s by a team led by David E. Nichols at Purdue University. It acts as a non-neurotoxic and highly selective serotonin releasing agent (SSRA) in animals and a putative entactogen in humans.
5-Iodo-2-aminoindane (5-IAI) is a drug of the 2-aminoindane group which acts as a releasing agent of serotonin, norepinephrine, and dopamine. It was developed in the 1990s by a team led by David E. Nichols at Purdue University. 5-IAI fully substitutes for MDMA in rodents and is a putative entactogen in humans. Unlike related aminoindane derivatives like MDAI and MMAI, 5-IAI causes some serotonergic neurotoxicity in rats, but is substantially less toxic than its corresponding amphetamine homologue pIA, with the damage observed barely reaching statistical significance.
2-Aminoindane (2-AI) is an aminoindane and research chemical with applications in neurologic disorders and psychotherapy that has also been sold as a designer drug. It acts as a selective substrate for NET and DAT.
A serotonin releasing agent (SRA) is a type of drug that induces the release of serotonin into the neuronal synaptic cleft. A selective serotonin releasing agent (SSRA) is an SRA with less significant or no efficacy in producing neurotransmitter efflux at other types of monoamine neurons, including dopamine and norepinephrine neurons.
N-Ethyl-5-trifluoromethyl-2-aminoindane (ETAI) is a drug of the 2-aminoindane group with putative entactogenic effects. It functions as a selective serotonin releasing agent (SSRA). ETAI is the aminoindane analogue of fenfluramine and is approximately 50% as neurotoxic in comparison.
5-Trifluoromethyl-2-aminoindane (TAI) is a drug of the 2-aminoindane group with putative entactogenic effects. It functions as a selective serotonin releasing agent (SSRA). TAI is the aminoindane analogue of norfenfluramine and is approximately 50% as neurotoxic in comparison.
RDS-127 is a drug which is used in scientific research. It acts as a D2-like receptor agonist and also has some serotonin and adrenergic agonist effects, as well as some anticholinergic action, and produces both anorectic and pro-sexual effects in animal studies.
Aminoindane refers to a class of compounds that are structurally related to indane, a bicyclic hydrocarbon. These compounds are characterized by the presence of an amino group attached to the indane structure. Aminoindanes have been studied for their potential applications in various fields, including medicine and neuroscience.
2-Aminotetralin (2-AT), also known as 1,2,3,4-tetrahydronaphthalen-2-amine (THN), is a stimulant drug with a chemical structure consisting of a tetralin group combined with an amine.
2-Amino-1,2-dihydronapthalene (2-ADN), also known as 2-aminodilin (2-AD), is a stimulant drug. It is a rigid analogue of phenylisobutylamine and substitutes for amphetamine in rat discrimination tests, although at approximately one fourth the potency. It is closely related to 2-aminotetralin (2-amino-1,2,3,4-tetrahydronaphthalene), which also substitutes for amphetamine, and is about two times as potent in comparison.
Indantadol is a drug which was formerly being investigated as an anticonvulsant and neuroprotective and is now under development for the treatment of neuropathic pain and chronic cough in Europe by Vernalis and Chiesi. It acts as a competitive, reversible, and non-selective monoamine oxidase inhibitor, and as a low affinity, non-competitive NMDA receptor antagonist. A pilot study of indantadol for chronic cough was initiated in October 2009 and in April 2010 it failed to achieve significant efficacy in neuropathic pain in phase IIb clinical trials.
1-Aminomethyl-5-methoxyindane (AMMI), is a drug developed by a team led by David E. Nichols at Purdue University, which acts as a selective serotonin releasing agent (SSRA) and binds to the serotonin transporter with similar affinity relative to DFMDA.
NM-2-AI, also known as N-methyl-2-aminoindane, is a drug of the 2-aminoindane group that has been sold online as a designer drug. It is a rigid analogue of methamphetamine. NM-2-AI acts as a selective norepinephrine releasing agent, but also has affinity for several monoamine receptors.
1-Aminoindane (1-AI), also known as 1-aminoindan, 1-indanylamine, or 1-indanamine, is an aminoindane. It is a positional isomer of 2-aminoindane. A variety of notable derivatives of 1- and 2-aminoindane are known. The (R)-enantiomer of 1-aminoindan, (R)-1-aminoindan, is pharmacologically active and is an active metabolite of the antiparkinsonian agent rasagiline.
