| ≥1 piece |
Baicalin Source: Ben Pinwei salvia baicalin Scutellaria baicalensis Georgi dry root.
This product is calculated according to the dry goods, including baicalin (C23H30O11), injection of not less than 90.0 percent, with oral administration of not less than 83.0 percent.
Characters Ben Pinwei yellow powder, bitter.
Identification
(1) take a small amount of the goods, plus ethanol 2ml allows the dissolved, add 2 drops of ferric chloride test solution, that is, significant color pollution.
(2) take a small amount of the goods, water 2ml, dropping test solution allows the dissolved sodium hydroxide solution that is significantly orange, dropping dilute acetic acid solution so that the basic colors recede. 5% and then dropping two drops of a solution of sodium chloride, yellow solution, hydrochloric acid added after persistent color.
Check
dry weight of the goods taken in 105 ?? drying to constant weight, lose weight by not over 3.0 percent (Chinese Pharmacopoeia 2000 version of Appendix 2 àù G).
Determination as High Performance Liquid Chromatography (Chinese Pharmacopoeia 2000 version of Appendix 2 à? D) determination.
Chromatography conditions and test the applicability of the system