98% Pterostilbene | Natural Stilbene Polyphenol High-Stability Anti-Aging Crystalline Powder
98% High Purity Phloretin | Apple-Derived Dihydrochalcone Brightening Penetration Active Monomer
- Attached Documents Per Batch: COA, HPLC chromatogram, MSDS, heavy metal & full microbial test reports
- Product Name: Pterostilbene
- Common Name: Pterostilbene (3,5-Dimethoxy Resveratrol)
- Natural Raw Source: Pterocarpus heartwood, Blueberry fruit extract
- CAS No.: 537-42-8
- Core Active: Trans-Pterostilbene (Stilbene polyphenol, methylated derivative of resveratrol)
- Standard Assay: ≥98% (RP-HPLC Pharmacopoeia Test)
- Appearance: Pure white to off-white acicular crystalline powder, odorless & non-hygroscopic
- Solubility: Freely soluble in ethanol, methanol, DMSO, ethyl acetate; barely soluble in cold water
- Extraction & Purification Process: Botanical alcohol extraction → macroporous resin impurity removal → silica gel chromatography → low-temperature vacuum recrystallization
- Test Standards: CP / USP / EP monograph specifications for stilbene monomers
- Product Grades: Premium Cosmetic Grade, Nutraceutical Grade, Pharmaceutical Research Reference Grade
- International Certifications: ISO22000, FSSC22000, full SGS testing, Halal & Kosher available
- Mesh Size: 80–100 mesh, customized 300 mesh ultra-fine crystal available
- MOQ: 1 KG
- Free Sample: 5–30g for formula trial & third-party full pharmacopoeia testing
- Shelf Life: 24 months under sealed refrigeration at 2–8℃, avoid oxygen & light oxidation
- Packaging: 1kg light-proof fluorinated foil bag, 25kg fiber drum with double PE liner, OEM private label available
Detailed Introduction of Pterostilbene
Phloretin is exclusive lipophilic dihydrochalcone polyphenol monomer from apples. Different from water-soluble phlorizin, it features outstanding transdermal penetration, making it core high-purity botanical raw material for premium brightening serums, penetration-boosting preparations and metabolic pharmacological research worldwide. We adopt bark & peel from standardized eco apple base, integrated ethanol extraction & multi-stage chromatography recrystallization technology to fully remove interfering tannin, polysaccharide and miscellaneous flavonoids. Finished product delivers pure single HPLC peak with batch fluctuation controlled within 0.3%, fully meeting strict QC requirements of high-end cosmetic brands, oral pharmaceutical factories and university new drug screening.
Phloretin owns rare dual-industry core advantages: For skincare, it provides powerful tyrosinase inhibition, broad-spectrum anti-oxidation and unique penetration enhancement, greatly improving skin absorption of VC, niacinamide, asiaticoside and other actives; For pharma & nutraceuticals, it blocks GLUT glucose transporters to assist glucose metabolism regulation, with anti-inflammation & UV DNA repair activity. Compatible with alcohol serums, ointments, liposomes and oral tablets, it delivers synergistic effects when blended with brightening & repair actives.
The whole closed-loop production runs under low light & low temperature to prevent polyphenol oxidation caused by phenolic hydroxyl groups. Pesticide residues, heavy metals and residual solvents all meet EU & US import limits. Stable ton-level bulk stock with full chromatograms & compliance docs per batch, offering one-stop service for global cosmetic manufacturers, nutraceutical traders and pharmaceutical R&D labs.
Core Efficacy of Pterostilbene
Powerful broad-spectrum antioxidant to eliminate UV free radicals & prevent collagen loss
Inhibit tyrosinase & melanin transfer to fade sun spots & even skin tone
Activate SIRT1 longevity protein to regulate aging pathways for long-term repair
Broad anti-inflammatory & antifungal activity to relieve redness & sensitive irritation
Regulate lipid & glucose metabolism to support healthy blood lipid & sugar levels
High lipophilic permeability to boost skin absorption of compound actives
Core Advantages of Pterostilbene
98% recrystallized pure monomer without cis-isomer impurities, clean single HPLC peak
Dimethoxy molecular structure delivers superior absorption & stability than resveratrol
Dual natural raw source (pterocarpus + blueberry) with higher native polyphenol content
Low-light closed production prevents oxidation, extending finished product shelf life
Four-fold strict QC for pesticides, heavy metals, solvents & microbes for global imports
Full-chain one-stop service: free samples, ton bulk stock, compound OEM & full export documents
Quality Specifications
| Test Item | Standard Requirement |
|---|---|
| Pterostilbene Content (Pharma HPLC) | ≥98.0% |
| Cis-Isomer Impurity | ≤0.1% |
| Appearance | Pure white to off-white acicular crystalline powder |
| Loss on Drying | ≤0.2% |
| Residue on Ignition | ≤0.2% |
| Total Heavy Metals | ≤10ppm |
| Pb≤2ppm, As≤1ppm, Cd≤1ppm, Hg≤0.1ppm | |
| Residual Organic Solvents | Compliant with USP / EP / CP pharmaceutical raw material limits |
| Total Plate Count | ≤500 CFU/g (Strict pharmaceutical standard) |
| Yeast & Mold | ≤50 CFU/g |
| Salmonella, E.coli: Negative |
Application & Dosage
Premium Anti-Aging Brightening Serums:
0.04%–0.16% for spot fading & anti-photoaging
Anti-Inflammatory Repair Creams:
0.03%–0.12% for red sensitive skin
Longevity Nutraceutical Capsules:
80–240mg daily for cell aging support
Lipid & Glucose Regulation Herbal Preparations:
0.06%–0.25% oral formulas
Natural Antifungal Wash Products:
0.02%–0.09% oil-control body wash
Lab Pharmacopoeia Reference Standard:
98% crystal for polyphenol aging target research
What we offer
Supporting Services
Common Questions
FAQ About Sponge Pterostilbene
1. What is the core difference between Pterostilbene and Resveratrol?
2. Any special storage for 98% Pterostilbene?
3. Can this product export EU/US cosmetic, nutraceutical & pharma factories smoothly?
4. What are three core skincare benefits of Pterostilbene?
5. What is pterostilbene solubility?
Highly lipophilic, barely soluble in pure water, requires ethanol or lipid carrier for aqueous formulas.