Quassin is a white bitter, crystalline substance extracted from the quassia tree. It is one of the most bitter substances found in nature with a bitter threshold of 0.08 ppm and it is 50 times more bitter than quinine.

CAS：76-78-8
中文别名：苦味素;
英文别名：2,12-Dimethoxypicrasa-2,12-diene-1,11,16-trione;Einecs 200-985-9;Quassin,mixture of isomers w/Neoquassin and Isoquassin;11,16-trione,2,12-dimethoxy-picrasa-12-diene-1;Picrasa-2,12-diene-1,11,16-trione,2,12-dimethoxy;(3aS,6aR,7aS,8S,11aS,11bS,11cS)-1,3a,4,5,6a,7,7a,8,11,11a,11b,11c-dodecahydro-2,10-dimethoxy-3,8,11a,11c-tetramethyldibenzo[de,g]chromene-1,5,11-trione;
分子式：C22H28O6
分子量：388.454
精确质量：388.189
Psa：78.9
Logp：2.819

EINECS号：200-985-9

密度：1.23 g/cm3
沸点：586.3ºC at 760 mmHg
熔点：200 - 222ºC
闪点：255.4ºC
折射率：1.552