Pyrrolnitrin - NIHS

13251325JP XVIO fficial monographs /Quinapril Hydrochloridefire, and preferably in a cold C10H6Cl2N2O2 (3-chloro-2-nitrophenyl)pyrrole[1018-71- 9] Pyrrolnitrin contains not less than 970mg (potency)and not more than 1020mg (potency) per mg, calcu-lated on the dried basis. The potency of Pyrrolnitrinis expressed as mass (potency) of Pyrrolnitrin (C10H6Cl2N2O2).DescriptionPy rrolnitrin occurs as yellow to yellow-brown,crystals or crystalline is freely soluble in methanol and in ethanol (95), andpractically insoluble in (1)Determine the absorption spectrum of asolution of Pyrrolnitrin in ethanol (95) (1 in 100,000) as di-rected under Ultraviolet-visible Spectrophotometry< >,and compare the spectrum with the Reference Spectrum orthe spectrum of a solution of Pyrrolnitrin RS prepared in thesame manner as the sample solution: both spectra exhibitsimilar intensities of absorption at the same wavelengths.(2)Determine the infrared absorption spectrum of Pyr-rolnitrin as directed in the potassium bromide disk methodunder Infrared Spectrophotometry< >, and compare thespectrum with the Reference Spectrum or the spectrum ofPyrrolnitrin RS: both spectra exhibit similar intensities ofabsorption at the same wave point< >124 1289 CPurityRelated substances Dissolve g of Pyrrolnitrinin 10 mL of methanol, and use this solution as the sample so-lution.

JP XVI Official Monographs / Quinapril Hydrochloride 1325 fire, and preferably in a cold place. Pyrrolnitrin ピロールニトリン C10H6Cl2N2O2:257.07 3-Chloro-4-(3-chloro-2-nitrophenyl)pyrrole

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