Ampelopsin, also known as dihydromyricetin, is a flavanonol, a type of flavonoid. It is found in the Ampelopsis species japonica, megalophylla, and grossedentata; Cercidiphyllum japonicum; Hovenia dulcis; Rhododendron cinnabarinum; some Pinus species; and some Cedrus species, as well as in Salix sachalinensis.

CAS：27200-12-0
中文别名：(2R,3R)-3,5,7-三羟基-2-(3,4,5-三羟基苯基)苯并二氢吡喃-4-酮;蛇葡萄素;藤茶提取物;
英文别名：rac-ampelopsin;Ampelopsin;3,5,7,3\',4\',5\'-hexahydroxy-2,3-dihydroflavonol;(2R,3R)-3,5,7-Trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,3-dihydrochromen-4-one Ampelopsin DHM;Ampelopsin E;(2R,3R)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,3-dihydrochromen-4-one;3,5,7,3\',4\',5\'-hexahydroxy-2,3-dihydroflavone;3,3\',4\',5,5\',7-Hexahydroxy-2,3-dihydroflavanonol;Flavanone,3,3\',4\',5,5\',7-hexahydroxy;Dihydromyricetin;Ampeloptin;dihydromyricetin;(2R,3R)-dihydromyricetin;
分子式：C15H12O8
分子量：320.251
精确质量：320.053
Psa：147.68
Logp：0.8919

UNII：KD8QND6427

密度：1.808 g/cm3
沸点：780.7ºC
闪点：296.7ºC
折射率：1.798
蒸汽压：1.16E-25mmHg at 25°C

海关编码：2942000000