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IUPAC name
Other names
67025-94-9 YesY
ChemSpider 4588895 N
Jmol 3D model Interactive image
PubChem 5486190
Molar mass 467.43 g/mol
Vapor pressure {{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Chlornaltrexamine is an irreversible mixed agonist–antagonist for μ-opioid receptors, which forms a covalent bond to the active site. It is twenty-two times more potent than morphine. Its alkylating group is a bis(chloroalkyl)amino-residue similar to that of the nitrogen mustards.[1] [2] [3] [4] [5][6]

See also


  1. Portoghese PS, Larson DL, Jiang JB, Takemori AE, Caruso TP (July 1978). "6β-[N,N-Bis(2-chloroethyl)amino]-17-(cyclopropylmethyl)-4,5α-epoxy-3,14-dihydroxymorphinan(chlornaltrexamine) a potent opioid receptor alkylating agent with ultralong narcotic antagonist actitivty". J. Med. Chem. 21 (7): 598–9. PMID 209185. doi:10.1021/jm00205a002. 
  2. Portoghese PS, Larson DL, Jiang JB, Caruso TP, Takemori AE (February 1979). "Synthesis and pharmacologic characterization of an alkylating analogue (chlornaltrexamine) of naltrexone with ultralong-lasting narcotic antagonist properties". J. Med. Chem. 22 (2): 168–73. PMID 218009. doi:10.1021/jm00188a008. 
  3. Caruso TP, Takemori AE, Larson DL, Portoghese PS (April 1979). "Chloroxymorphamine, and opioid receptor site-directed alkylating agent having narcotic agonist activity". Science. 204 (4390): 316–8. PMID 86208. doi:10.1126/science.86208. 
  4. Caruso TP, Larson DL, Portoghese PS, Takemori AE (June 1980). "Pharmacological studies with an alkylating narcotic agonist, chloroxymorphamine, and antagonist, chlornaltrexamine". J. Pharmacol. Exp. Ther. 213 (3): 539–44. PMID 6162947. 
  5. Caruso TP, Larson DL, Portoghese PS, Takemori AE (December 1980). "Isolation of selective 3H-chlornaltrexamine-bound complexes, possible opioid receptor components in brains of mice". Life Sci. 27 (22): 2063–9. PMID 6259471. doi:10.1016/0024-3205(80)90485-3. 
  6. Sayre LM, Takemori AE, Portoghese PS (1983). "Alkylation of opioid receptor subtypes by α-chlornaltrexamine produces concurrent irreversible agonistic and irreversible antagonistic activities.". J. Med. Chem. 26 (4): 503–6. PMID 6300401. doi:10.1021/jm00358a009.