E-5880 (R,S)-Equol, >99%

Synonyms : [4',7-Isoflavandiol]

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  • 100 mg
  • 64
  • 57
  • 49
  • 6,400
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  • 300 mg
  • 172
  • 153
  • 132
  • 17,300
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  • 500 mg
  • 225
  • 200
  • 173
  • 22,600
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  • 1 g
  • 362
  • 322
  • 278
  • 36,400
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  • 5 g
  • 625
  • 557
  • 480
  • 62,900
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  • 10 g
  • 980
  • 874
  • 753
  • 98,600
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  • 25 g
  • 1,975
  • 1,761
  • 1,518
  • 198,700
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  • In stock

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  • M.W. 242.27
  • C15H14O3
  • [94105-90-5]
  • M.I. 13: 3673
  • M.I. 14: 3644

Storage: Store at or below -20 ºC. Solubility: Soluble in DMSO at 200 mg/mL; soluble in ethanol at 200 mg/mL; very poorly soluble in water; maximum solubility in plain water is estimated to be about 20-50 µM; buffers, serum, or other additives may increase or decrease the aqueous solubility. Disposal: A.

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View the SDS for this product

  • Urinary metabolite of daidzein, produced by humans and horses. Heinonen, S., et al. "Identification of isoflavone metabolites dihydrodaidzein, dihydrogenistein, 6'-OH-O-dma, and cis-4-OH-equol in human urine by gas chromatography-mass spectrometry using authentic reference compounds." Anal. Biochem. 274: 211-219 (1999).
  • This product is a racemic mixture of the R- and S-enantiomers. However, the naturally-occurring form of equol from horse urine consists of a single stereoisomer, namely the S-isomer. While the chemical properties of the S-isomer are essentially identical to those of the racemic mixture (except for rotation of plane polarized light, melting point, and so on), the biological properties of the naturally-occurring S-isomer are quite likely to be somewhat different from those of the racemic mixture.
  • The CAS number of our racemic Equol product is 94105-90-5, as noted near the top of this page. The CAS number of the naturally-occurring S-isomer is 531-95-3.
  • Another CAS number previously assigned to (R,S)-Equol, namely 66036-38-2, has been deleted by CAS and is no longer in use.
  • Sold for laboratory or manufacturing purposes only; not for human, medical, veterinary, food, or household use.
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