Ag. Cabanillas et al., RAPID-DETERMINATION OF PROPRANOLOL HYDROCHLORIDE AND HYDRALAZINE HYDROCHLORIDE IN PHARMACEUTICAL PREPARATIONS BY REVERSE-PHASE LIQUID-CHROMATOGRAPHY, Annali di chimica, 83(11-12), 1993, pp. 523-528
A high speed high-performance liquid chromatographic method has been d
eveloped for the determination of propranolol and hydralazine in pharm
aceutical dosage forms. A reversed-phase system was used, based on an
octadecylsilane-bonded stationary phase and a mobile phase of a 40/60%
v/v aqueous solution/acetonitrile. The aqueous solution is 7.5x10(-3)
M in dodecyl hydrogen sulfate sodium salt and 1% in acetic acid. The
detector response at 230 nm was linearly related to the amount injecte
d over a wide range and the method is sensitive, simple, rapid and pre
cise.