TCS Industries Limited (China-sourced API supplier) supplies Resveratrol — Plant Extract CAS 501-36-0 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Overview
| Product Name | Resveratrol |
|---|---|
| Structural Formula |  |
| CAS Number | 501-36-0 |
| Molecular Formula | C14H12O3 |
| Molecular Weight | 228.24 g/mol |
| InChIKey | LUKBXSAWLPMMSZ-OWOJBTEDSA-N |
| SMILES | Available on request where applicable |
| Appearance | White to off-white crystalline powder |
| Purity / Grade | By agreed specification and batch COA |
| Storage | Keep tightly closed in a cool, dry, well-ventilated place |
Resveratrol (CAS 501-36-0) is a polyphenolic stilbene compound with the formula C₁₄H₁₂O₃ (MW 228.24), naturally occurring in grapes, red wine, berries, and peanuts. Trans-resveratrol is the biologically active isomer. It is an extensively studied nutraceutical compound, with research covering antioxidant, anti-inflammatory, and cardiovascular-protective mechanisms. Commercial resveratrol is sourced primarily from Polygonum cuspidatum (Japanese knotweed) root extraction.
TCS Industries Limited, a Hong Kong-based trading and sourcing company, supplies Resveratrol in pharmaceutical excipient and nutraceutical grades (50% to 99% purity) for global procurement programs.
> Applications
Nutraceutical supplement and functional food ingredient
Trans-resveratrol is used in dietary supplement capsules, tablets, and functional food formulations at typical doses of 100–500 mg/day. It is marketed for cardiovascular health, antioxidant protection, and healthy aging. Standardized extracts from Polygonum cuspidatum root are available at 50%, 98%, and 99% trans-resveratrol content. Baur et al. (Nat Rev Drug Discov, 2006, 5:493–506) reviewed the therapeutic potential and pharmacological basis of resveratrol.
Cosmetic and topical applications
Resveratrol is used as an antioxidant active ingredient in cosmetic serums, creams, and anti-aging skincare formulations at concentrations of 0.1–1.0%. Its photoprotective and anti-inflammatory properties make it suitable for products targeting UV damage and skin aging. Cosmetic-grade material requires controlled particle size, low heavy metals, and appropriate solubility characteristics for formulation.
> Sourcing & Supply
TCS Industries Limited supports development, qualification and commercial purchasing discussions for Resveratrol with buyers in Germany, France, Italy, Spain, the United Kingdom, the United States, Canada and Australia.
- Evaluation samples: botanical identity, assay basis and document needs are reviewed before dispatch.
- Commercial lots: repeat supply is arranged by specification, extract ratio, marker compound and destination-market requirements.
> Quality & Documentation
Key specification parameters include trans-resveratrol content (50%, 98%, or 99% by HPLC), total polyphenol content, emodin content (must be controlled for knotweed-derived extracts — EU Novel Food limit: ≤20 ppm), heavy metals (Pb, As, Cd, Hg), pesticide residues, residual solvents, microbial limits, and particle size. Identity confirmed by HPLC retention time, UV absorption (λmax ~306 nm for trans-isomer), and melting point. COA and MSDS are standard.
> Packaging
Resveratrol is sensitive to light, oxygen and heat. Standard packaging includes aluminum foil bags (vacuum-sealed or nitrogen-flushed) in fibre drums, protected from light. Store at controlled room temperature (15–25 °C) in sealed containers. Shelf life is typically 24 months when stored correctly. Labels and documents are checked before dispatch.
> Pricing & MOQ
Pricing is quoted by marker specification, extract ratio, packaging and destination. Samples, 25 kg packs and pallet quantities can be discussed according to project stage.
> Regulatory & Compounding Context
Trans-resveratrol from Polygonum cuspidatum is authorized as a Novel Food ingredient in the EU (Regulation 2015/2283, authorization granted 2016). Maximum permitted levels in food supplements: 150 mg/day. GRAS in the US for specific food applications. Not a pharmacopoeial monograph substance (no USP or Ph.Eur. monograph). Emodin content must be controlled to meet EU Novel Food specifications. Buyers should confirm Novel Food compliance status at inquiry.
> Alias Index
- IUPAC: 5-[(E)-2-(4-Hydroxyphenyl)vinyl]benzene-1,3-diol
- CAS Number: 501-36-0
- Formula: C₁₄H₁₂O₃ (MW 228.24)
- Active isomer: trans-Resveratrol (3,5,4′-trihydroxystilbene)
- Natural sources: Polygonum cuspidatum (Japanese knotweed), grape skins, red wine
- InChIKey: LUKBXSAWLPMMSZ-OWOJBTEDSA-N
- Commercial request terms: trans-resveratrol 98%, resveratrol extract, Japanese knotweed extract, polyphenol supplement, TCS Industries Limited
> FAQ
What purity grades of Resveratrol does TCS supply?
TCS sources standardized Polygonum cuspidatum extracts at 50%, 98%, and 99% trans-resveratrol content (HPLC). Higher purity grades have lower emodin content and are suitable for EU Novel Food compliance. Specify the target purity and application at inquiry.
What documents are available for Resveratrol orders?
COA and MSDS are standard for commercial discussions. COO, packing list, invoice and other import-support documents can be arranged according to order scope.
Do you supply Resveratrol to Germany, France and Spain?
Yes. We support B2B buyers in Germany, France, Italy, Spain, the United Kingdom, the Netherlands, Poland and Switzerland, subject to route and document review.
Do you supply the United States, Canada and Australia?
Yes. We review the United States, Canada, Australia and New Zealand for project supply, import documents, packaging and logistics planning before quotation.
Is Resveratrol a Novel Food in the EU?
Yes. Trans-resveratrol from Polygonum cuspidatum is authorized as a Novel Food in the EU with a maximum permitted intake of 150 mg/day in food supplements. Emodin content must be controlled to ≤20 ppm. Confirm Novel Food authorization details and compliance documentation requirements at inquiry.
What is the difference between trans-Resveratrol and cis-Resveratrol?
Trans-resveratrol is the biologically active isomer studied in clinical research. Cis-resveratrol is the less active geometric isomer. Commercial products should specify trans-resveratrol content by HPLC. UV exposure can cause trans-to-cis isomerization, which is why light protection is required.
Can you arrange samples before commercial purchasing?
Samples or evaluation quantities may be reviewed for qualified buyers after target specification, application and destination-market requirements are clarified.
How is Resveratrol packaged for export?
Packaging is confirmed by quantity and material properties. Typical options include foil bags, HDPE containers, fibre drums, 25 kg bags or palletized export packaging.
Can buyer-defined specifications be reviewed?
Yes. Send the specification, methods, impurity limits and required documents. TCS can review feasibility before confirming quotation and lead time.
What payment terms are normally used?
Standard payment is 100% T/T before dispatch unless a different arrangement has been approved for an established commercial account.
What lead time should buyers expect?
Lead time depends on stock, batch size, document scope and destination. Available stock can move faster; made-to-order or pallet programs require longer planning.
Why must emodin content be controlled?
Polygonum cuspidatum root contains both resveratrol and anthraquinones (primarily emodin). The EU Novel Food authorization requires emodin content ≤20 ppm in the final extract. Higher-purity extracts (98–99%) typically have lower emodin levels. COA should include emodin testing results.
Last reviewed: June 2026
Evaluation and research orders (≤10 kg) are shipped with COA, MSDS, and certificate of origin. Bulk commercial orders (>10 kg) qualify for volume pricing with a full technical documentation package available on request.
> Request a Quote
If your team already has a target application, estimated quantity, destination market, or documentation requirements, send those details so the commercial response can be prepared more efficiently.