Overview
Pterostilbene is a naturally occurring stilbenoid compound structurally similar to resveratrol but with superior bioavailability. It is found in small quantities in blueberries, grapes, and the heartwood of red sandalwood. The compound has gained significant attention in recent years due to its potent antioxidant and anti-inflammatory properties. In the B2B market, pterostilbene is primarily supplied as a white to pale yellow crystalline powder with purity levels typically ranging from 98% to 99%. It is valued for its stability and enhanced metabolic properties compared to similar compounds, making it particularly attractive for nutraceutical and pharmaceutical applications.
Physical and Chemical Properties
Pterostilbene is characterized by its molecular formula C16H16O3 and a molecular weight of 256.30 g/mol. It typically appears as a white to pale yellow crystalline powder with a melting point between 89-92°C. The compound exhibits good solubility in organic solvents like ethanol and DMSO but has limited solubility in water. Key chemical properties include its stability under normal conditions and resistance to enzymatic degradation, which contributes to its superior bioavailability compared to similar compounds. The presence of two methoxy groups in its structure enhances its lipophilicity and membrane permeability, factors that are crucial for its biological activity and commercial applications.
Main Applications
The primary application of pterostilbene is in the dietary supplement industry, where it is marketed for its potential anti-aging and neuroprotective benefits. It is frequently included in formulations targeting cognitive health, metabolic support, and longevity. Pharmaceutical researchers are investigating its potential in managing conditions like diabetes, cardiovascular diseases, and certain cancers. In the cosmetic industry, pterostilbene is valued for its antioxidant properties and is incorporated into anti-aging skincare products. Its ability to protect against UV-induced damage and reduce inflammation makes it particularly useful in sun care and anti-wrinkle formulations. The compound's stability also makes it suitable for various delivery systems in these applications.
Safety and Storage
Pterostilbene is generally considered safe when used in appropriate doses, with no significant toxicity reported in studies. However, as with any active compound, proper handling procedures should be followed to avoid unnecessary exposure. Workers should use appropriate personal protective equipment when handling the powder form to prevent inhalation or eye contact. For storage, pterostilbene should be kept in a cool, dry place away from direct light and moisture. Optimal storage conditions help maintain the compound's stability and shelf life, which is typically two years when properly stored. Suppliers usually package the material in aluminum bags with desiccants to preserve quality during transportation and storage.
B2B Procurement Guide
When procuring pterostilbene, buyers should prioritize suppliers who can provide comprehensive certificates of analysis (CoA) detailing purity, heavy metal content, and residual solvents. The market offers various grades, with pharmaceutical-grade (99% purity) commanding premium prices compared to food-grade (98% purity) material. Lead times can vary significantly depending on order quantity and supplier location, with typical delivery times ranging from 2-8 weeks for bulk orders. Many suppliers offer both现货 (spot goods) and定制 (custom synthesis) options, with minimum order quantities (MOQs) commonly starting at 1kg for standard grades. Buyers should verify organic certification if required for their specific applications and consider conducting third-party testing for critical applications.
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