Colorimetric determination of antazoline in some pharmaceutical preparations with sodium nitrite.
D000814:Aniline Compounds / Q000032:analysis; D001593:Benzyl Compounds / Q000032:analysis; D002626:Chemistry, Pharmaceutical; D003124:Colorimetry / Q000379:methods*; D006634:Histamine H1 Antagonists / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles / Q000032:analysis*; D008722:Methods; D009573:Nitrites; D013696:Temperature
D000814:Aniline Compounds; D001593:Benzyl Compounds; D006634:Histamine H1 Antagonists; D007093:Imidazoles; D009573:Nitrites