-
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
Pseudoginsenoside Cyclic Peptide B
Heterophyllin B
【Structural formula】
【Molecular formula and molecular weight】C 40 H 58 N 8 O 8 ;778.
[Source] The dry tuber of Pseudostellaria heterophylla (Miq.
【Properties】White powder
This product is easily soluble in methanol
Melting point: 204.
【Purity Check】
TLC
1.
Developing solvent chloroform - methanol (9:1)
Inspection of dilute potassium bismuth iodide solution, inspection under sunlight
2.
Developing solvent n-butanol - acetic acid - water (1 pixel in horizontal)
Inspection of dilute potassium bismuth iodide solution, inspection under sunlight
High performance liquid chromatography
Chromatographic column Agilent XDB C 18 , 5um (4.
Mobile phase acetonitrile - water (30:70), 1m1 / min
Detection wavelength 203nm
【Structural identification】203
3364 (-NH), 2961 (C-H), 1639 (C=O), 1528, 1447, 705
ESI-MS m/z: 779 [M+H] +
1 H-NMR (C 5 D 5 N) δ: 9.
13 C-NMR (C 5 D 5 N) δ: 45.
【Storage】Dry at room temperature