Examples of prescriptions:
Children scattered light: catechu 9g, light pink 6g, borneol 0.9g, keel 9g, Yanmo external application.
Note: 1, physicochemical identification method: take a little catechin or square catechin powder, add water to boil, filter, the filtrate plus ferric chloride solution, a drop, are instantly yellow-green (tannin); take a little tea powder . Soluble in alcohol, filtered. A little sodium hydroxide was added to the filtrate, and several milliliters of petroleum ether were added after shaking. The petroleum ether layer showed green fluorescence. The same treatment of catechu cream does not show green fluorescence.
2. Ingredients: The catechin cream contains about 20% to 50% of catechin and contains 2% to 20% of catechins and catechins, but does not contain catechins. About 30% to 50% of catechins and about 24% of catechins. As well as quercetin, catechin fluorescein, and brown catechin.
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