Quercetin 98%

Quercetin 98% is a concentrated flavonol phytochemical supplied as a yellow powder for dietary supplement and nutrition formulations. It is the aglycone form of quercetin, chemically distinct from glycosylated derivatives such as rutin, and is used when formulators require defined flavonol content rather than a lower-assay botanical extract.

The 98% specification represents the principal high-assay commercial grade. Chemical form is an important procurement attribute because anhydrous quercetin and quercetin dihydrate have different molecular weights and material identities. This distinction affects specification comparison, analytical interpretation, and weight-based formulation calculations.

SKU: BOT-PHY-0010 Categories: Phytochemicals, Flavonoids Tags: Antioxidant Support, Dietary Supplements, Flavonoids, Flavonols, Quercetin

Ingredient Profile & Common Uses

Quercetin belongs to the flavonol subclass of flavonoids and is the aglycone counterpart of compounds such as rutin and other quercetin glycosides. Commercial botanical production is frequently associated with rutin-rich flower buds of Styphnolobium japonicum, widely known by the synonym Sophora japonica, followed by conversion and purification of the target flavonol.

For commercial sourcing, 98% is the main high-purity grade associated with concentrated quercetin powder. Buyers should evaluate more than the percentage alone: hydrate form, assay basis, analytical method, and physical format can distinguish materials carrying the same nominal purity. Standard powder, micronized material, and solubility-enhanced formats therefore should not be treated as identical technical products.

The ingredient is used mainly in concentrated supplement and nutrition systems. Its characteristic yellow color and poor aqueous solubility influence formulation strategy, making dry-dose formats comparatively straightforward while liquid systems require greater attention to wetting, dispersion, precipitation, and physical stability.

Application Areas

Capsules

The concentrated powder is suitable for single-ingredient and multicomponent capsule products where a defined flavonol level is required without the larger fill volume associated with low-assay botanical extracts.

Tablets

Tablet formulations can incorporate the high-assay material into compressed nutrition systems. Development work should consider powder distribution, excipient compatibility, compression behavior, and the natural yellow color of the ingredient.

Powder Blends and Sachets

Dry nutrition blends, premixes, stick packs, and sachets can use the ingredient at controlled inclusion levels. Premixing can help achieve uniform distribution within multicomponent formulations.

Specialized Delivery Systems

Micronization, encapsulation, phospholipid complexes, solid dispersions, and related delivery approaches may be considered when improved dispersion or aqueous performance is required.

Typical Specifications

Parameter	Specification / Reference
Product Name	Quercetin 98%
Compound	Quercetin
Chemical Name	2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one
Ingredient Type	High-purity flavonol phytochemical
Primary Specification	Quercetin ≥98%
Product Form	Powder
Chemical Class	Flavonol / flavonoid
Reference Appearance	Yellow powder
Water Behavior	Poorly soluble in water
Anhydrous Quercetin CAS	117-39-5
Anhydrous Formula	C15H10O7
Anhydrous Molecular Weight	302.23 g/mol
Quercetin Dihydrate CAS	6151-25-3
Dihydrate Formula	C15H10O7·2H2O
Dihydrate Molecular Weight	338.27 g/mol

Typical Specifications

Parameter	Specification / Reference
Product Name	Quercetin 98%
Compound	Quercetin
Chemical Name	2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one
Ingredient Type	High-purity flavonol phytochemical
Primary Specification	Quercetin ≥98%
Product Form	Powder
Chemical Class	Flavonol / flavonoid
Reference Appearance	Yellow powder
Water Behavior	Poorly soluble in water
Anhydrous Quercetin CAS	117-39-5
Anhydrous Formula	C15H10O7
Anhydrous Molecular Weight	302.23 g/mol
Quercetin Dihydrate CAS	6151-25-3
Dihydrate Formula	C15H10O7·2H2O
Dihydrate Molecular Weight	338.27 g/mol

Technical & Quality Considerations

For a high-assay phytochemical, analytical evaluation should establish both compound identity and quantitative content. Chromatographic methods such as HPLC are widely used to separate the target flavonol from related constituents, while the stated assay basis should be interpreted together with the chemical form. A nominal purity percentage alone does not fully describe whether two materials are technically equivalent.

The standard material is a yellow crystalline powder with limited water solubility. Particle characteristics can influence wetting, flow, suspension behavior, dissolution rate, and processing performance. Micronized or delivery-enhanced formats may therefore behave differently from conventional powder even when their nominal quercetin content is similar.

During scale-up of capsules, tablets, or dry powders, R&D teams should evaluate premixing sequence, blend uniformity, flowability, filling performance, and compression behavior. In aqueous systems, attention shifts to wetting, dispersion, precipitation, sedimentation, and physical stability. Formulations requiring better aqueous performance may use particle-size reduction, encapsulation, complexation, or other delivery technologies.

Packaging & Commercial Supply

Essencefield supports product evaluation, formulation trials, commercial orders, and ongoing ingredient supply. Packaging, storage, and shipping arrangements are determined by product characteristics, order quantity, stability requirements, and destination-market needs.

Supply Item	General Information
Sample	Available upon request for formulation, testing, and supplier evaluation
Order Quantities	100 g · 1 kg · 5 kg · 25 kg · 100 kg · 500 kg · Bulk
Sample Lead Time	Typically 5–7 days after sample confirmation
Production Lead Time	Typically 15–30 days after order and specification confirmation
Packaging	Suitable protective inner packaging with bags, cartons, drums, or other appropriate outer packaging
Storage	Store in tightly sealed, suitable protective packaging in a cool, dry environment. Protect from moisture, heat, and direct sunlight. Specific storage conditions follow the approved product specification.
Documentation	COA · Product Specification · TDS · SDS · Applicable declarations (as applicable)

Final order quantities, lead times, packaging, documentation, and shipping arrangements are confirmed according to the selected product and commercial requirements.