Quercetin 98% supplier specification
Nutrition BioTech is a bulk quercetin ingredient supplier and manufacturer, supplying quercetin in two grades — anhydrous (CAS 117-39-5) and dihydrate (CAS 6151-25-3) — each at 98% minimum by HPLC, produced from Sophora japonica-derived rutin by hydrolysis and purification, for B2B nutraceutical formulation.
Quercetin is supplied as either the anhydrous form or the dihydrate, and the two are not interchangeable at equal weight. Every lot ships with a Certificate of Analysis stating identity, HPLC assay and the assay basis, so that the hydrate form is fixed before label claims and overage are calculated.
| Ingredient name | Quercetin 98% — two grades supplied: anhydrous and dihydrate |
|---|---|
| Synonyms | Quercetin; 3,3′,4′,5,7-pentahydroxyflavone; quercetol; meletin; sophoretin; quercetin dihydrate |
| CAS number | 117-39-5 (anhydrous); 6151-25-3 (dihydrate) |
| Molecular formula | C15H10O7 (anhydrous); C15H10O7 · 2H2O (dihydrate) |
| Molecular weight | 302.24 g/mol (anhydrous); 338.27 g/mol (dihydrate) |
| Assay / purity | 98% minimum by HPLC for both grades, each calculated on its own basis (anhydrous or dihydrate) and stated on the Certificate of Analysis for each lot. |
| Hydrate form and assay basis | Both grades are supplied as separate specifications and the grade is fixed per order. The dihydrate carries two molecules of water per molecule of quercetin, so at the same 98% assay an equal weight of dihydrate delivers roughly 10.7% less quercetin than the anhydrous grade. The two are therefore not interchangeable weight for weight, and the grade should be fixed before label claims, overage and cost-in-use are calculated. |
| Source / production route | Produced from rutin of Sophora japonica (Japanese pagoda tree) flower bud origin by hydrolysis and purification. Botanical origin and solvent set are stated on the specification sheet. |
| Appearance | Yellow to greenish-yellow crystalline powder |
| Solubility | Practically insoluble in water; soluble in ethanol, DMSO and dilute alkali. Wetting behaviour and particle size should be confirmed for the intended dosage form. |
| Delivery format options | Standard 98% powder, micronised powder and solubility-enhanced formats (phytosome, liposomal or solid dispersion) are written as separate specifications with their own assay basis, and are not interchangeable on a weight-for-weight basis. |
| Typical applications | Capsules, tablets, sachets and powder blends for B2B nutraceutical manufacturing; commonly formulated alongside zinc, vitamin C, bromelain and fisetin |
| Documentation | Certificate of Analysis, specification sheet, botanical identity, heavy metals, microbiological testing, residual solvents, pesticide residues, allergen statement, GMO statement, particle size data and stability data |
| Quality system | ISO 22000:2018, FSSC 22000, HACCP and GMP (certificates provided on request) |
| Supplier | Nutrition BioTech, 1601 W. Mission Blvd, Suite 103 (DL#29), Pomona, CA 91766, United States |
Quercetin
Quercetin for immune, antioxidant and cellular renewal supplement formulas.
Why brands ask for it
Quercetin remains a high-demand flavonoid for immune, antioxidant and cellular renewal formulas. Nutrition BioTech can support standard quercetin and upgraded delivery concepts for brands needing better differentiation than commodity quercetin powder.
Finished-product fit
Immune support, zinc ionophore awareness, allergy-season support, senolytic stack. The strongest conversations start with format, serving size, documentation, and how the material behaves in the intended formula.
What makes the sample useful
- Strong consumer awareness
- Solubility/absorption challenge creates upgrade opportunity
- Pairs with zinc, bromelain, vitamin C, fisetin
Before the sample ships
- Confirm it quercetin dihydrate.
- Confirm it absorb.
- Confirm any phytosome/liposomal option.
- Review serving-size logic and label-space fit.
- Confirm source, identity, and supporting documentation.
File Package
Ask for the material files that match your market, dosage form, and internal review process.
Available documents may include: COA / Specification / Allergen Statement / GMO Statement / Vegan Statement / Heavy Metals / Microbial Limits / Manufacturing Flow Chart / Residual Solvent / Country of Origin / Composition Statement.
Regulatory & Facility Support
Product-specific regulatory information may include Self-GRAS, NDI/NDIN, GRAS, ODI, or regulatory review notes, depending on the ingredient and target market.
Facility and quality system support may include Kosher, Halal, HACCP, ISO 22000, PCQI, c-GMP, NSF and other applicable certificates upon request.
