Standard fingerprint of fleabane phenol bulk drug and preparation, establishment method and application
A standard fingerprint, the technology of Dengzhan Asarum is applied to the standard fingerprint of Dengzhan Asarum raw materials and preparations, and its establishment, the standard fingerprint and its application in the quality control of raw materials and preparations can solve the problem. Problems such as low quality and low identification rate of Dengzhan asarol raw materials and preparations cannot be well realized
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Embodiment 1
[0034] Example 1: Establishment of the standard fingerprint of Erigeron breviscapus medicinal material
[0035] 1. Chromatographic conditions and system applicability Agilent 1100 Series HPLC; Zorbax SB-C18 (4.6mm×250mm, 5μm) chromatographic column; acetonitrile-methanol-formic acid as mobile phase; detection wavelength: 270nm, 330nm; theory The plate number should not be less than 6000 based on the calculation of the scutellarin peak.
[0036] 2. Preparation of the reference substance solution Take an appropriate amount of the scutellarin reference substance and prepare it into a 0.4 mg / mL methanol solution.
[0037] 3. Preparation of the test solution Take 0.50 g of Erigeron breviscapus medicinal material, heat and reflux with methanol to extract, evaporate the extract to dryness, dissolve it with 60% methanol and dilute to 10 mL, filter through a 0.45 μm filter membrane, and obtain.
[0038] 4. Determination method Precisely draw 5 μL each of the reference substance solu...
Embodiment 2
[0049] Example 2: Establishment of standard fingerprint of scutellarin crude drug
[0050] 1. Chromatographic conditions and system applicability Agilent 1100 Series HPLC; Zorbax SB-C18 (4.6mm×250mm, 5μm) chromatographic column; acetonitrile-methanol-formic acid as mobile phase; detection wavelength: 270nm, 330nm; theory The plate number should not be less than 6000 based on the calculation of the scutellarin peak.
[0051] 2. Preparation of reference substance solution Take an appropriate amount of scutellarin reference substance and add methanol to make a 0.4 mg / mL solution.
[0052] 3. Preparation of the test product solution Precisely weigh an appropriate amount of the test product to prepare a 1 mg / mL methanol solution.
[0053] 4. Determination method Precisely draw 5 μL of the reference substance solution and the test solution, and inject them into the liquid chromatograph respectively for determination.
[0054] 5. Establishment of standard fingerprint of scutellar...
Embodiment 3
[0085] Example 3: Establishment of standard fingerprints of scutellarin preparations
[0086] 1. Chromatographic conditions and system applicability Agilent 1100 Series HPLC; Zorbax SB-C18 (4.6mm×250mm, 5μm) chromatographic column; acetonitrile-methanol-formic acid as mobile phase; detection wavelength: 270nm, 330nm; theory The plate number should not be less than 6000 based on the calculation of the scutellarin peak.
[0087] 2. Preparation of reference substance solution Take an appropriate amount of scutellarin reference substance and add methanol to make a 0.4 mg / mL solution.
[0088] 3. Preparation of the test product solution Precisely weigh an appropriate amount of the test product to prepare a 0.02 g / mL methanol solution.
[0089] 4. Determination method Accurately draw 5 μL each of the reference substance solution and the test solution, inject it into the high-performance liquid chromatograph, and measure it.
[0090] 5. Establishment of standard fingerprint of sc...
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