Lumbar kidney cream fingerprint spectrum establishing method and Lumbar kidney reference fingerprint spectrum
A technology for comparing fingerprints and fingerprints, applied in the field of drug analysis, can solve problems such as many components and complexities, and achieve the effects of many peaks, high precision, and stable and reliable quality standards.
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Embodiment 1
[0056] Example 1: Methodological verification
[0057] Six parts of waist-kidney ointment of 18046 were selected, and the test solution was prepared according to the proposed method. Take the first copy for precision and stability investigation; total six copies for repeatability investigation.
[0058] Preparation of test solution: Take three pieces of waist kidney ointment and cut them into strips, tear off the backing, combine them into a mass in units of one piece, and stuff them into a 250ml flask, add 100ml of water, and then extract with 2ml of ethyl acetate. Reflux the volatile oil extractor for 3 hours on an electric heating mantle; after the reflux, let it cool, put the ethyl acetate layer of the volatile oil extractor into a separatory funnel, and rinse the volatile oil extractor with 2ml, 2ml, and 1ml ethyl acetate. Put it into a separatory funnel, discard the water layer, filter the ethyl acetate layer through a filter paper containing 1g of anhydrous sodium sulfate, ...
Embodiment 2
[0087] Example 2: Establishment of the fingerprint of Yaoshen Ointment
[0088] 1. Eliminate peaks of excipients
[0089] 1. Auxiliary peak of liquid phase spectrum
[0090] Waist kidney ointment is made by spreading a mixed ointment mass on an elastic cloth. The elastic cloth is soaked in methanol and ethanol so that the dye on the elastic cloth is eluted and enters the test solution. For this reason, try to use 50% ethanol and 50% methanol to reflux the elastic cloth of the waist and kidney ointment to reduce the amount of eluted dye to reduce the interference of similarity evaluation.
[0091] Chromatographic conditions: Instrument: Agilent 1100 High Performance Liquid Chromatograph. The elution conditions are shown in Table 3 below. Other chromatographic conditions are the same as the experimental conditions proposed in Example 1.
[0092] table 3
[0093] Time min Acetonitrile (%) 0.02% trifluoroacetic acid solution (%) 03070 206040 408020 581000 611000 673070 733070
[0094...
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