Atracurium Besylate (Synonyms: BW 33A, Tracrium, Wellcome 33A74)

Atracurium Besylate is a neuromuscular blocking agent with ED95 of 0.2 mg/kg. Target: nAChRAtracurium besylate is a neuromuscular-blocking drug or skeletal muscle relaxant in the category of non-depolarizing neuromuscular-blocking drugs, used adjunctively in anesthesia to facilitate endotracheal intubation and to provide skeletal muscle relaxation during surgery or mechanical ventilation. Atracurium is classified as an intermediate-duration non-depolarizing neuromuscular-blocking agent [1]. A 14C radiolabeled metabolism study in cats confirmed the lack of hepatic or renal involvement in the metabolism of atracurium: radioactivity eliminated in bile and urine was predominantly from metabolites rather than the unchanged parent drug [2].

References:
[1]. Fagerlund, M.J., M. Dabrowski, and L.I. Eriksson, Pharmacological characteristics of the inhibition of nondepolarizing neuromuscular blocking agents at human adult muscle nicotinic acetylcholine receptor. Anesthesiology, 2009. 110(6): p. 1244-1252.
[2]. Neill, E. and D. Chapple, Metabolic studies in the cat with atracurium: a neuromuscular blocking agent designed for non-enzymic inactivation at physiological pH. Xenobiotica, 1982. 12(3): p. 203-210.