Makarova E.A. 1
Sidullina S.A. 1
Semina I.I. 1
Tarasova R.I. 2
Moustafin R.I. 1
1 Kazan State Medical University
2 Kazan State Technological University
The current study presents methods of purity determination of a new biologically active substance (BAS) sodium acetyl hydrazine-4-chloro-phenyl phosphinic acid (Na-CPAH) with neurotropic activity: «transparency of the solution», «color of the solution», «pH», «impurities», «loss on drying» «chlorides», «sulfates», «Sulphated ash and heavy metals». These procedures are necessary for pharmaceutical analysis, purity determination and are required to determine impurities. A thin-layer bottom-up chromatography has been suggested as a suitable method of identifying impurities in a solvent system ethanol: chloroform: concentrated ammonia solution 25 % (80:20:5). The result is considered reliable if a spot with Rf = 0,58 is identifi ed in the chromatogram in ultraviolet light at 254 nm and there may be also determined a spot not exceeding the size and absorptive intensity of SIP spot. Optimal conditions of chromatography Na-CPAH contribute highly sensitive determination of impurities in the substance.