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Tanshinone
Tanshinone I
【Structural formula】
[Molecular formula and molecular weight] C 18 H 12 O 3 ; 276.
[Source] The dried roots and rhizomes of Salvia miltiorrhiza Bge
【Properties】Brown-red crystals
This product is easily soluble in chloroform , soluble in organic solvents such as acetone , and slightly soluble in water
Melting point: 233~234℃
【Purity Check】
TLC
1.
Developing solvent toluene - ethyl acetate (19)
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2.
Developing agent chloroform- ethyl acetate - toluene - formic acid (20:16:123)
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High performance liquid chromatography
Column Phenmenex Gemini C 18 , 5um(4.
The mobile phase methanol - water (75:25), 1ml / min
Detection wavelength 210nm, 245nm, 323nm
Differential calorimetry
Start temperature 50℃, end temperature 300℃, heating rate 5℃/min
[Structural identification] 417, 323, 266, 243
1688, 1660, 1593, 1430, 1190, 1166, 917, 834, 790, 760, 707
EI-MS m/z: 276[M] + , 248[M-CO] + , 178, 165
1 H-NMR (CDCl 3 ) δ: 2.
13 C-NMR (CDCl 3 ) δ: 118.
【Storage】Dry and airtight
Related link: Ginkgolide