Methocinnamox

Methocinnamox
Clinical data
Other namesMCAM; M-CAM
Routes of
administration		Intravenous, subcutaneous injection
Drug classOpioid receptor antagonist
Identifiers
  • (E)-N-[(4R,4aS,7aR,12bR)-3-(Cyclopropylmethyl)-9-hydroxy-7-oxo-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-4a-yl]-3-(4-methylphenyl)prop-2-enamide
CAS Number
PubChem CID
ChemSpider
ChEMBL
Chemical and physical data
FormulaC30H32N2O4
Molar mass484.596 g·mol−1
3D model (JSmol)
  • CC1=CC=C(C=C1)/C=C/C(=O)N[C@@]23CCC(=O)[C@H]4[C@@]25CCN([C@@H]3CC6=C5C(=C(C=C6)O)O4)CC7CC7
  • InChI=1S/C30H32N2O4/c1-18-2-4-19(5-3-18)8-11-25(35)31-30-13-12-23(34)28-29(30)14-15-32(17-20-6-7-20)24(30)16-21-9-10-22(33)27(36-28)26(21)29/h2-5,8-11,20,24,28,33H,6-7,12-17H2,1H3,(H,31,35)/b11-8+/t24-,28+,29+,30-/m1/s1
  • Key:PJOHVEQSYPOERL-SHEAVXILSA-N

Methocinnamox (MCAM) is an opioid receptor antagonist. It is a pseudo-irreversible non-competitive antagonist of the μ-opioid receptor and a competitive antagonist of the κ- and δ-opioid receptors. The drug has a very long duration of action of up to months with a single dose due to its pseudo-irreversibility. It is administered in animals by intravenous or subcutaneous injection.

It was first described in the scientific literature in 2000. It has not been studied in humans as of 2022. There is interest in methocinnamox in the potential treatment of opioid use disorder and opioid overdose due to its much longer-lasting and insurmountable effects relative to other opioid antagonists like naloxone and naltrexone. Clinical trials of the drug are expected.

Methocinnamox should not be confused with methoclocinnamox (MCCAM), which is a closely related but structurally different compound (chlorine instead of methyl on one of the benzene rings). The drug was derived via structural modification of buprenorphine.

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