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Rapacuronium: Wikis


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Rapacuronium bromide
Systematic (IUPAC) name
(2β,3α,5α,16β,17β)-3-(acetyloxy)-16-(1-allylpiperidinium-1-yl)-2-piperidin-1-yl-17-(propionyloxy)androstane bromide
CAS number 156137-99-4
ATC code none
PubChem 5311398
Chemical data
Formula C37H61N2O4+
Mol. mass 597.891 g/mol
Synonyms [(2S, 3S, 5S, 8R, 9S, 10S, 13S, 14S, 16S, 17S)-3-acetyloxy-10,13-dimethyl-2-(1-piperidyl)-16-(1-prop-2-enyl-3,4,5,6-tetrahydro-2H-pyridin-1-yl)-2 ,3 ,4 ,5 ,6 ,7 ,8 ,9 ,11 ,12 ,14, 15, 16, 17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]propanoate
Pharmacokinetic data
Bioavailability Not applicable
Protein binding Variable
Metabolism Hydrolyzed to active metabolites
CYP system not involved
Half life 141 minutes (mean)
Excretion Renal and fecal
Therapeutic considerations
Pregnancy cat. C(US)
Legal status Withdrawn (U.S)
Routes Intravenous

Rapacuronium (Raplon) is a rapidly acting, non-depolarizing neuromuscular blocker formerly used in modern anaesthesia, to aid and enable endotracheal intubation, which is often necessary to assist in the controlled ventilation of unconscious patients during surgery and sometimes in intensive care. As a non-depolarizing agent it did not cause initial stimulation of muscles before weakening them.

Due to risk of fatal bronchospasm it was withdrawn from the United States market by Organon on March 27, 2001.[1]


  1. ^ Shapse, Deborah (March 27, 2001). Voluntary Market WithdrawalPDF (10.8 KiB). Organon International. Retrieved on 2007-04-02.


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