RESUMEN
OBJECTIVE: To develop an HPLC method for determination of nine components in Huangqichifeng capsules. METHODS: The analysis was carried out on a Waters Symmetry Shield RP18 column (4.6 mm × 150 mm, 5 μm). The mobile phase was composed of methanol (A) and water (B) with gradient elution (0-15 min, 5%A → 20%A; 15-55 min, 20% A → 35%A; 55-100 min, 35% A → 85% A) and the flow rate was 1.0 mL · min-1. The detection wavelengths were set at 230 nm for paeoniflorin (0-25 min) and 254 nm for other components (25-100 min). The column temperature was 35°C. RESULTS: The linear ranges of paeoniflorin, prin-O-glucosylcimifugin, calycosin-7-0-β-Z)-glucopyranoside, cimifugin, 4'-0-β-Z)-glucopyranosyl-5-0-methylvisammi-nol, formononetin-7-0-β-Z)-glucopyranoside, sec-O-glucosylhamaudol, calycosin, formononetin were 1.510-15.1, 0.047-0.94, 2.192-10.96, 0.052 2-1.044, 0.0414-0.828, 1.56-7.80, 0.0422-0.844, 0.149-0.744 and 0.110-0.552 μg (r ≥ 0.9990) respectively. The average recoveries were 99.48%, 103.15%, 102.77%, 99.27%, 101.99%, 102.25%, 101.49%, 100.45% and 97. 49% (RSD < 2.5%, n=6) respectively. CONCLUSION: The method is simple, accurate, repeatable, andean be used to control the quality of Huangqichifeng capsules. Copyright 2012 by the Chinese Pharmaceutical Association.