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EINECS 208-522-2
CAS No. 531-95-3 Density 1.286 g/cm3
Solubility Soluble in DMSO, methanol, or ethanol. Melting Point 189-190 °C
Formula C15H14O3 Boiling Point 441.7 °C at 760 mmHg
Molecular Weight 242.27 Flash Point 220.9 °C
Transport Information Appearance white to off-white solid
Safety Risk Codes
Molecular Structure Molecular Structure of 531-95-3 (2H-1-Benzopyran-7-ol,3,4-dihydro-3-(4-hydroxyphenyl)-, (3S)-) Hazard Symbols

2H-1-Benzopyran-7-ol,3,4-dihydro-3-(4-hydroxyphenyl)-, (S)-;4',7-Isoflavandiol (6CI,7CI,8CI);(-)-(S)-Equol;(-)-Equol;(S)-(-)-4',7-Isoflavandiol;(S)-Equol;4',7-Dihydroxyisoflavan;Equol, (-)-;


EQUOL Chemical Properties

IUPAC Name: (3S)-3-(4-Hydroxyphenyl)-3,4-dihydro-2H-chromen-7-ol
The MF of Equol (CAS NO.531-95-3) is C15H14O3.

The MW of Equol (CAS NO.531-95-3) is 242.27.
Synonyms of Equol (CAS NO.531-95-3): (3S)-3-(4-Hydroxyphenyl)-7-chromanol ; 2H-1-Benzopyran-7-ol, 3,4-dihydro-3-(4-hydroxyphenyl)-, (3S)- ; 3,4-Dihydro-3-(4-hydroxyphenyl)-(S)-2H-1-benzopyran-7-ol ; 7-Hydroxy-3-(4'-hydroxyphenyl)chroman 
Product Categories: Iso-Flavones;Chiral Reagents;Heterocycles;Metabolites & Impurities
Apperance: White to Off-White Solid
Index of Refraction: 1.644 
EINECS: 208-522-2
Density: 1.286 g/ml 
Flash Point: 220.9 °C
Boiling Point: 441.7 °C
Melting Point: 189-190 °C


   Equol (CAS NO.531-95-3) is used as receptor and binding activity.A human urinary metabolite of Daidzein. It is also a natural estrogenic metabolite from soy isoflavones.

EQUOL Toxicity Data With Reference


msc-hmn-oth 1 µmol/L/24H

    CALEDQ    Cancer Letters (Shannon, Ireland). 142 (1999),111.

EQUOL Safety Profile

Mutation data reported. Experimental reproductive effects. When heated to decomposition it emits acrid smoke and irritating vapors.Safety information of Equol (CAS NO.531-95-3):
WGK Germany  3
F  3-10

EQUOL Specification

Equol (4',7-isoflavandiol) is an isoflavandiol metabolized from daidzein, a type of isoflavone, by bacterial flora in the intestinesWhile endogenous estrogenic hormones such as estradiol are steroids, equol is a nonsteroidal estrogen. However, only about 30-50% of people have intestinal bacteria that make equol.Equol may have beneficial effects on the incidence of prostate cancer and physiological changes after menopause. Other benefits may be realized in treating male pattern baldness, acne, and other problems because it functions as a DHT blocker. S-Equol preferentially activates estrogen receptor type β.

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