S Equol
Bulk supplier information | CAS 531-95-3 | pathgene
What this material is
S-Equol is the defined S enantiomer of equol, a soy-isoflavone metabolite used in research and formulation development. The local COA identifies S-equol as CAS 531-95-3. The S designation and CAS 531-95-3 should remain explicit on the purchase specification.
Where it fits
This grade fits analytical standards, nutraceutical formulation screening, and studies of isoflavone-related ingredient systems. The local product note describes limited water solubility and better fit with DMSO, ethanol, methanol, lipid, or dispersion systems. Human studies and regulatory status must be assessed separately for the target market.
Formulation and comparison
A 500 g prototype at 0.2% w/w would require 500 g × 0.2% = 1.0 g. Keep the S designation on the purchase order and do not treat a racemic or unspecified equol listing as equivalent without an identity and stereochemical check.
Quality profile
The latest local batch PGSEQ-260716 was produced 2026-07-16 and tested 2026-07-30.
Test | Release requirement | Documented result |
Appearance | White crystalline powder | Conforms |
Identification | IR | Complies |
Purity | ≥98% | 99.9% |
Assay dry basis | ≥98% | 99.9% |
Loss on drying | ≤1% | 0.04% |
Historical lots PGSEQ-260612 and PGSEQ-260112 also passed release testing with slightly different values. These are historical observations, not a promise for every future shipment.
Supply and storage
The documented pack size is 1 kg per bag. Store sealed, dry, and protected from light at room temperature. Confirm current stereochemical identity, COA, dispersion needs, and market-specific compliance before ordering.
Technical references
· PubChem S-equol identity record https://pubchem.ncbi.nlm.nih.gov/compound/S-equol
For current COA, specification, sample, packaging, and lead-time confirmation, contact pathgene. pathgenebio.com
Official website: https://pathgenebio.com/en
China
