Equol (4',7-isoflavandiol) is an isoflavandiol metabolized from daidzein, a type of isoflavone, by bacterial flora in the intestines. While endogenous estrogenic hormones such as estradiol are steroids, equol is a non-steroidal estrogen. However, only about 30-50% of people have intestinal bacteria that make equol. Equol can exist in two enantiomeric forms, (S)-equol and (R)-equol. (S)-Equol preferentially binds estrogen receptor beta.

CAS：531-95-3
中文别名：雌马酚,4\',7-异黄烷二酚;(S)-3,4-二氢-3-(4-羟基苯基)-2H-1-苯并吡喃-7-醇;
英文别名：(S)-3-(4-Hydroxyphenyl)chroman-7-ol;R,S-EQUOL;7,4\'-ISOFLAVANDIOL;2H-1-Benzopyran-7-ol, 3,4-dihydro-3-(4-hydroxyphenyl)-, (S)-;4\',7-ISOFLAVANDIOL;4\',7-DIHYDROXYISOFLAVAN;
分子式：C15H14O3
分子量：242.27
精确质量：242.094
Psa：49.69
Logp：2.8165

MDL号：MFCD00200962

外观与性状：白色至淡黄色粉末
密度：1.286 g/cm3
沸点：441.7ºC at 760 mmHg
熔点：189-190ºC
闪点：220.9ºC
折射率：1.644
稳定性：Sensitive to light and heat.
储存条件：Store at -20ºC

海关编码：2932999099