-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
Proteoside A
Complanatuside A
【Structural formula】
【Molecular formula and molecular weight】C 28 H 32 O 16 ;624.
[Source] Leguminous plant Astragalus complanalus R.
【Properties】Yellow crystal
This product is easily soluble in methanol
Melting point: 279~280℃
【Purity Check】
TLC
1.
Developing solvent of n-butanol - methanol - water (13:3: 1)
Inspection of 10% aluminum trichloride ethanol solution, daylight inspection
2.
Developing agent chloroform-methanol-water (17:7:2 lower layer)
Inspection of 10% aluminum trichloride ethanol solution, daylight inspection
High performance liquid chromatography
Chromatographic column Agilent SB C 18 , 10um (4.
Mobile phase acetonitrile - aqueous solution (20:80), 1ml / min
Detection wavelength 267nm
【Structural identification】267
3370(-OH), 1656(C=O), 1598(-Ar), 1500(-Ar), 1253(CO)
ESI-MS m/z: 647 [M+Na] +
1 H-NMR (CD 3 OD) δ: 12.
13 C-NMR (CD 3 OD) δ: 156.
【Storage】Dry, airtight and refrigerate
Related link: betulinic acid