mCPP's strongest actions are at the 5-HT2B and 5-HT2C receptors and its discriminative cue is mediated primarily by 5-HT2C.[28][42][43] Its negative effects such asanxiety,headaches, andappetite loss are likely mediated by its actions on the 5-HT2C receptor.[13][24][44] Other effects of mCPP includenausea,hypoactivity, andpenile erection, the latter two the result of increased 5-HT2C activity and the former likely via 5-HT3 stimulation.[45][46][47] mCPP is known to induce migraines and this may be mediated by serotonin 5-HT2B receptor agonism.[48]
In comparison studies, mCPP has approximately 10-foldselectivity for the human 5-HT2C receptor over the human 5-HT2A and 5-HT2B receptors (Ki = 3.4 nM vs. 32.1 and 28.8 nM).[11] It acts as apartial agonist of the human 5-HT2A[49] and 5-HT2C[50] receptors but as anantagonist of the human 5-HT2B receptors.[51]
mCPP produces thehead-twitch response, a behavioral proxy ofpsychedelic effects, in rodents, and hence may behallucinogenic in humans.[52] Despite this however, mCPP has been described as non-hallucinogenic in humans.[53] In any case,hallucinations have occasionally been reported when large doses of mCPP are taken.[53]
Based on the recommendation of theEACD, the New Zealand government has passed legislation which placed BZP, along with the other piperazine derivatives TFMPP, mCPP, pFPP, MeOPP and MBZP, into Class C of the New Zealand Misuse of Drugs Act 1975. A ban was intended to come into effect in New Zealand on December 18, 2007, but the law change did not go through until the following year, and the sale of BZP and the other listed piperazines became illegal in New Zealand as of 1 April 2008. An amnesty for possession and usage of these drugs remained until October 2008, at which point they became completely illegal.[62] However, mCPP is legally used for scientific research.
mCPP is not scheduled at the federal level in theUnited States,[63] but it is possible that it could be considered a controlled substance analog ofBZP, in which case purchase, sale, or possession could be prosecuted under theFederal Analog Act.
However, "chlorophenylpiperazine" is a Schedule Icontrolled substance in the state ofFlorida making it illegal to buy, sell, or possess in this state.[64]
United Arab Emirates
mCPP is illegal in the UAE, the country has strict drug laws, and many psychoactive substances are classified as controlled or prohibited.[65]
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