Cyprenorphine

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Cyprenorphine
Systematic (IUPAC) name
6,7,8,14-tetrahydro-N-(Cyclopropylmethyl) -7α-(1-hydroxy-1-methylethyl)-6,14-endo-ethenonororipavine
Identifiers
CAS number	4406-22-8
ATC code	?
PubChem	544534
Chemical data
Formula	C26H33NO4
Mol. mass	423.545 g/mol
Pharmacokinetic data
Bioavailability	?
Metabolism	?
Half life	?
Excretion	?
Therapeutic considerations
Pregnancy cat.	?
Legal status	Schedule II
Routes	?

Cyprenorphine (M-285) is a drug which is an opioid derivative. It is related to more well-known opioids such as buprenorphine, which is used as an analgesic and for the treatment of opioid addiction, and diprenorphine, which is used as an antidote to reverse the effects of other opioids.

Cyprenorphine has mixed agonist-antagonist effects at opioid receptors, like those of buprenorphine. However the effects of cyprenorphine are somewhat different, as it produces pronounced dysphoric and hallucinogenic effects which limit its potential use as an analgesic.^[1][2]

[edit] References

1. ^ Bentley KW, Boura ALA, Fitzgerald AE, Hardy DG, McCoubrey A, Aikman ML, Lister RE. Compounds Possessing Morphine-Antagonizing or Powerful Analgesic Effects. Nature, 1965; (206):102-103.
2. ^ Lowe G, Williams DI. Some Effects of a Hallucinogenic Compound (Cyprenorphine Hydrochloride; M 285) on the Light Reinforced Behaviour of Rats. Nature. 1969; (224):1226.

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