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Demecarium bromide

Molecular Formula:C32H52N4O4.2BR
Molecular Weight:716.595
CAS Registry No: 56-94-0
Systematic Name:
  • (m-Hydroxyphenyl)trimethylammonium bromide decamethylenebis(methylcarbamate) (7CI)
  • Ammonium, (m-hydroxyphenyl)trimethyl-, bromide, decamethylenebis(methylcarbamate)
  • Benzenaminium, 3,3'-(1,10- decanediylbis((methylimino)carbonyloxy))bis(N,N,N-trimethyl- , dibromide
  • Demecarium bromide
StoragePreserve in tight, light-resistant containers
Shelf Life3 year(s)
Appearance white or slightly yellow, slightly hygroscopic, crystalline powder
Solubility freely soluble in water and in alcohol; soluble in ether; sparingly soluble in acetone
Identification a) infrared absorption ; a violet-blue color is produced; a pink reineckate of demecarium forms, and it melts between 131 degree and 136 degree, with decomposition; a solution of it responds to the tests for bromide
pHbetween 5.0 and 7.0, in a solution (1 in 100)
Waternot more than 2.0%
Residue on ignitionnot more than 0.1%
Heavy metals0.002%
Limit of m -trimethylammoniophenol bromideany blue color produced in the upper layer obtained from the Test solution is not more intense than that obtained from the Control solution
AssayDemecarium Bromide contains not less than 95.0 percent and not more than 100.5 percent of C32H52Br2N4O4
1)calculated on the anhydrous basis
Remark None
Pharmacopoeial QualityUSP