Our fisetin powder is produced through modern extraction, purification and recrystallization workflows. Strict separation steps remove plant impurities, residual solvents and unrelated flavonoid fractions to deliver consistent high‑purity material. Many low‑grade fisetin batches on the market suffer from unstable purity, high impurity content and poor crystal uniformity, which creates challenges for finished‑product formulation. Our fisetin forms uniform yellow crystalline powder with stable batch‑to‑batch performance, suitable for supplement capsule, tablet and compound formula manufacturing. No artificial additives, dyes or fillers are introduced during processing.

Product Specifications

We supply mainstream commercial grades of fisetin and support custom requirements for specific projects. Every batch is tested by HPLC to confirm purity and meets international food‑grade raw‑material standards.

• Botanical Source: Cotinus coggygria (Smoke tree)

• CAS No.: 528‑48‑3

• Appearance: Bright yellow crystalline powder

• Core Active Marker: Fisetin

• Standard Purity: 50%, 98% (HPLC tested)

• Solubility: Soluble in ethanol, DMSO; practically insoluble in water

• Mesh Size: 80‑120 mesh, adjustable upon request

• Available Certifications: ISO22000, Halal, Kosher

• Shelf Life: 24 months under sealed, cool‑dry dark storage

Application Fields

Thanks to its high purity and formula compatibility, fisetin is widely adopted across the global health‑product industry:

1. Dietary Supplements

2. Functional Nutraceuticals

3. Cosmetic Raw Materials

4. Research & Development Raw Materials

Our Supplier Advantages

We maintain stable raw‑material supply and complete extraction‑purification‑crystallization production lines. Rigorous in‑house quality control guarantees stable quality for bulk export orders.

• Strict raw‑material screening: Selected high‑quality Cotinus coggygria raw material; regular testing for heavy metals, pesticide residues and microbial contaminants.

• Optimized purification & recrystallization: Effectively removes miscellaneous flavonoids and solvent residues, ensuring stable high‑purity crystalline product.

• Batch‑by‑batch full inspection: Each shipment undergoes HPLC purity test, moisture, heavy‑metal and microorganism checks before release.

• Custom service available: Support particle‑size adjustment, pre‑mix compounding and private‑label packaging solutions.

• Flexible ordering: 1 kg sample orders are acceptable. We provide complete export documents including COA, MSDS and test reports for customs clearance.

Packaging & Storage Guidelines

• Standard Export Packaging: 1 kg aluminum foil vacuum bag; 25 kg food‑grade fiber drum with inner plastic lining bag

• Storage Conditions: Store in cool, dry, dark and well‑ventilated warehouse. Avoid high temperature, moisture and direct light exposure.

• Important Reminder: Keep tightly sealed after opening. Fisetin is sensitive to light and oxidation; improper storage will cause color darkening and activity loss.

FAQ

Q1: What is the main detection method for fisetin?
A1: HPLC is the mainstream industry testing method for fisetin purity, widely accepted by global supplement manufacturers.

Q2: Why is fisetin hardly soluble in water?
A2: Fisetin belongs to flavonol aglycone. Its molecular structure leads to very low water solubility. For water‑based finished products, formulation technologies such as liposome or cyclodextrin inclusion are commonly applied to improve dispersion.

Q3: What is your MOQ and lead‑time?
A3: MOQ starts at 1 kg for sample evaluation. Bulk orders have stable stock; custom‑spec orders require separate lead‑time confirmation.