Method for determining content of compound Caoshanhu lozenge
A technology of grass coral buccal tablets and determination methods, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of no reports and can not reflect the quality of buccal tablets well, and achieve enhanced controllability and enhanced Effects of plausibility and reliability
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Embodiment 1
[0045] A method for determining the content of compound grass coral buccal tablets, comprising using thin-layer chromatography to identify menthol and sargassum extract, and using high-performance liquid chromatography to simultaneously determine isoquinone in it under the chromatographic conditions of isocratic elution. The content of two index components, pyridine and rosmarinic acid. Specific steps include:
[0046] 【Content Determination】
[0047] (1) Chromatographic conditions and system suitability test Octadecylsilane bonded silica gel was used as filler; acetonitrile-0.1% phosphoric acid solution (20:80) was used as mobile phase; detection wavelength was 342nm. The number of theoretical plates should not be less than 1200 based on the peak of isoferidinium.
[0048] (2) Preparation of reference solution: Take appropriate amount of isoferidin reference substance and rosmarinic acid reference substance, weigh them accurately, add methanol to make solutions containing 8...
Embodiment 2
[0053] A method for determining the content of compound grass coral buccal tablets, comprising using thin-layer chromatography to identify menthol and sargassum extract, and using high-performance liquid chromatography to simultaneously determine isoquinone in it under the chromatographic conditions of isocratic elution. The content of two index components, pyridine and rosmarinic acid. Specific steps include:
[0054] 【Content Determination】
[0055] (1) Chromatographic conditions and system suitability test Octadecylsilane bonded silica gel was used as filler; acetonitrile-0.1% phosphoric acid solution (30:70) was used as mobile phase; detection wavelength was 270nm. The number of theoretical plates should not be less than 1200 based on the peak of isoferidinium.
[0056] (2) Preparation of reference substance solution Take appropriate amount of isoferidin reference substance and rosmarinic acid reference substance, weigh them accurately, add methanol to make a solution co...
Embodiment 3
[0061] A method for determining the content of compound grass coral buccal tablets, using high performance liquid chromatography to simultaneously determine the content of four index components, protocatechuic acid, caffeic acid, isoferidin, and rosmarinic acid, under gradient elution chromatographic conditions content, the specific steps include:
[0062] 【Content Determination】
[0063] (1) chromatographic conditions and system suitability test use octadecylsilane bonded silica gel as filler; mobile phase A is acetonitrile, mobile phase B is 0.1% phosphoric acid (containing 2.5% acetonitrile); flow rate is 1.0ml per minute, Linear gradient elution; column temperature is 38°C; detection wavelength is 294nm. The number of theoretical plates calculated based on the peak of isoferidin should not be less than 1200, and the resolution of the peaks of protocatechuic acid, caffeic acid, isoferidin and rosmarinic acid should not be less than 2.0. Mobile phase gradient change Mobile...
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