The amyrins are a pair of closely related natural chemical compounds of the triterpene class. They are designated α-amyrin and β-amyrin. Each has the chemical formula C30H50O. They are widely distributed in nature and have been isolated from a variety of plant sources. α-Amyrin is found in dandelion coffee.

CAS：638-95-9
中文别名：alpha-香树精;Urs-12-en-3β-ol;
英文别名：A-AMYRIN;4,4,6a,6b,8a,11,12,14b-octamethyl-1,2,3,4,4a,5,6,6a,6b,7,8,8a;α-Amyrin;12a,14,14a,14b-icosahydropicen-3-ol;VIMINALOL;alpha-amyrin;4,4,6a,6b,8a,11,12,14b-octamethyl-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydropicen-3-ol;Urs-12-en-3-ol, (3β)-;Urs-12-en-3-ol;AMYRIN,A;
分子式：C30H50O
分子量：426.717
精确质量：426.386
Psa：20.23
Logp：8.0248

UNII：30ZAG40J8N

外观与性状：白色结晶粉末
密度：1.01 g/cm3 (20ºC)
沸点：243ºC
熔点：178-183°C
闪点：218.6ºC
折射率：1.537
储存条件：Store in original container in a cool dark place.

危险品标志：Xi

生产方法
1. 从乙醇中得针晶。 有机合成。
用途
有机合成。