Pyridostigmine Bromide

Title: Pyridostigmine Bromide
CAS Registry Number: 101-26-8
CAS Name: 3-[[(Dimethylamino)carbonyl]oxy]-1-methylpyridinium bromide
Additional Names: 3-hydroxy-1-methylpyridinium bromide dimethylcarbamate; 1-methyl-3-hydroxypyridinium bromide dimethylcarbamate; 3-(dimethylcarbamyloxy)-1-methylpyridinium bromide
Manufacturers' Codes: Ro-1-5130
Trademarks: Kalymin (Temmler); Mestinon (Roche); Regonol (Organon)
Molecular Formula: C9H13BrN2O2
Molecular Weight: 261.12
Percent Composition: C 41.40%, H 5.02%, Br 30.60%, N 10.73%, O 12.25%
Literature References: Reversible inhibitor of acetylcholinesterase. Prepn: Urban, US 2572579 (1951 to Hoffmann-La Roche). Mechanism of protective effect in soman poisoning: X. Deyi et al., Fundam. Appl. Toxicol. 1, 217 (1981). Evaluation of effect on neuromuscular function: M. Glikson et al., ibid. 16, 288 (1991). Evaluation of side effects profile under desert conditions: J. E. Cook et al., Mil. Med. 157, 250 (1992). Review of prophylactic effect in nerve agent poisoning: R. M. Dawson, J. Appl. Toxicol. 14, 317 (1994).
Properties: Shiny, hygroscopic crystals from abs ethanol, mp 152-154°. Freely sol in water, alcohol. Practically insol in ether, acetone, benzene. Aq solns may be sterilized by autoclaving with steam.
Melting point: mp 152-154°
Therap-Cat: Cholinergic; in treatment of myasthenia gravis. Pre-exposure antidote to chemical warfare agents.
Keywords: Cholinergic.
Pyridoxal Pyridoxal 5-Phosphate Pyridoxamine Dihydrochloride Pyridoxine Hydrochloride Pyrifenox