Amer, M. M. published the artcileColorimetric determination of antazoline, Formula: C17H20ClN3, the publication is Australian Journal of Pharmaceutical Sciences (1974), 3(2), 58-60, database is CAplus.
The color reaction between antazoline-HCl (I) [2508-72-7] and Ce(SO4)2 yielded maximum absorption at 500 nm, and was used in the anal. of I in pharmaceutical preparations Fifty mg I in a final concentration of 50% H2SO4 and 2 mg ceric ammonium sulfate reached maximum intensity in 10 min and remained stable for an addnl. 30 min when kept cool. The color followed Beer’s Law at concentrations of 2-10 μgm/ml, and was due to the oxidation of I.
Australian Journal of Pharmaceutical Sciences 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, Formula: C17H20ClN3.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem