Amer, M. M. published the artcileColorimetric determination of antazoline in pharmaceutical preparations with sodium nitrite, COA of Formula: C17H20ClN3, the publication is Analyst (Cambridge, United Kingdom) (1974), 99(1181), 487-90, database is CAplus and MEDLINE.
Pharmaceutical preparations containing antazoline-HCl [2508-72-7] were analyzed by solution in aqueous HCl and addition of NaNO2 solution at <10°, giving a yellow color which was stabilized by the addition of iso-PrOH, and solution absorbance determined at 410 nm. Beer’s law was obeyed between 20-120 μg of antazoline-HCl and 20-140 μg of the methanesulfonate [3131-32-6].
Analyst (Cambridge, United Kingdom) published new progress about 2508-72-7. 2508-72-7 belongs to imidazoles-derivatives, auxiliary class Inhibitor,Immunology/Inflammation,Histamine Receptor, name is N-Benzyl-N-((4,5-dihydro-1H-imidazol-2-yl)methyl)aniline hydrochloride, and the molecular formula is C17H20ClN3, COA of Formula: C17H20ClN3.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem