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Tanshinone IIA
TanshinoneⅡA
【Synonyms】Tanshenquinone Ⅱ, Tanshenquinone ⅡA
【Structural formula】
[Molecular formula and molecular weight] C 19 H 18 O 3 ;294.
[Source] The dried roots and rhizomes of Salvia miltiorrhiza Bge
【Properties】Red crystal
This product is easily soluble in organic solvents such as ethanol , acetone , ether , benzene, and slightly soluble in water
Melting point: 208~210℃
【Purity Check】
TLC
1.
Developing solvent ethyl acetate - formic acid - water (10:2:3) supernatant
Inspection of 1% aluminum trichloride ethanol solution, inspection under sunlight and ultraviolet light (365nm)
2.
Developing solvent of acetone - water (1/1)
Inspection of 1% aluminum trichloride ethanol solution, inspection under sunlight and ultraviolet light (365nm)
High performance liquid chromatography
Chromatographic column YWG-C 18 , 10um (4.
Mobile phase methanol-1% acetic acid (40:60), 1ml/min
Detection wavelength 283nm
Differential calorimetry
Start temperature 50℃, end temperature 300℃, heating rate 5℃/min
【Structural identification】462,269,252,225
3140, 2960, 2925, 1700, 1670, 1585, 1540
EI-MS m/z: 294 [M] + , 279 [M—CH 3 ] + , 261, 251
1 H-NMR (CDCl 3 ) δ: 1.
13 C-NMR (CDCl 3 ) δ: 37.
【Storage】Dry and airtight