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Determination of Ursolic Acid in Dashanzha Pills
[Content determination] Take the product under the weight difference item, cut into pieces, mix well, take about 3g, accurately weigh it, add 30ml of water, warm it in a 60℃ water bath to dissolve it, add 2g of diatomaceous earth, stir and filter After that, the residue was washed with 30ml of water, dried at 100°C, and placed in a Soxhlet extractor together with the filter paper.
Each pill of this product contains hawthorn based on ursolic acid (C 30 H 48 O 3 ), not less than 7.
Determination of chlorogenic acid in Shuanghuanglian for injection (lyophilized)
[Content determination] Honeysuckle according to the 2015 edition of "Chinese Pharmacopoeia" four parts high performance liquid chromatography (General Principle 0512) determination
Note: The injection volume is 5ul
Chromatographic column: Zorbax SB C 18 , 4.
Column temperature: 25℃
Flow rate: 1.
Instrument configuration: quaternary pump with vacuum deaerator (G1354A)
Autosampler (G1367A)
Column thermostat (G1316A)
UV detector (G1314A)
Instrument control and data processing: Agilent Chemstation
Preparation of reference substance solution: Take an appropriate amount of chlorogenic acid reference substance, accurately weigh it, place it in a brown measuring flask, add water to make a solution containing 20ug per 1ml, and get it
Preparation of the test solution: Take the contents of the product under the item of difference in the filling amount, mix well, take 60mg, and accurately weigh it
Determination method: accurately draw 20ul each of the reference solution and the test solution, inject into the liquid chromatograph, and measure, and it is obtained
Related Links: Determination of Psoralen and Isopsoralen in Fenxiang Juhe Pills