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Molecular Formula:C19H18N4O2
Molecular Weight:334.377
CAS Registry No: 118428-36-7
Systematic Name:
  • 3(2H)-Pyridazinone, 4,5-dihydro-6-(2-(4-methoxyphenyl)-1H- benzimidazol-5-yl)-5-methyl-, (+-)-
StorageIn an airtight container
Shelf Life2 year(s)
Appearance white or slightly yellowish powder, hygroscopic
Solubility practically insoluble in water, freely soluble in dimethylformamide, slightly soluble in acetone and in methanol
Identification a) Infrared absorption spectrophotometry
Liquid chromatographyimpurities A, B: for each impurity, not more than 0.1%
any other impurity: for each impurity, not more than 0.1%
total: not more than 0.2%
disregard limit: 0.05%
Heavy metalsMaximum 10 ppm
WaterMaximum 1.0%
Sulphated ashMaximum 0.1%
ASSAY98.0% to 101.0%
1)calculated with reference to the anhydrous substance
Pharmacopoeial QualityEP