For B2B partners requiring detailed technical documentation. A comprehensive, batch-specific Certificate of Analysis (COA) will be provided promptly upon request.

Parameter	Specification	Test Method
Identity
Product Name	Pterostilbene Powder	-
CAS No.	537-42-8	-
Molecular Formula	C₁₆H₁₆O₃	-
Key Specifications
Purity (HPLC)	≥ 98%	HPLC
Appearance	White to off-white fine powder	Visual Inspection
Particle Size	95% passing 80 mesh	Sieve analysis
Loss on Drying	≤ 0.5%	Gravimetric method
Melting Point	88-92°C	DSC
Microbiological Quality
Total Aerobic Microbial Count	≤ 1,000 CFU/g	USP <61> / ISO 4833-1
Total Combined Yeasts and Molds	≤ 100 CFU/g	USP <61> / ISO 21527-2
Escherichia coli	Absent in 1g	USP <62>
Salmonella spp.	Absent in 10g	USP <62>
Heavy Metals & Contaminants
Lead (Pb)	≤ 1.0 mg/kg	ICP-MS
Arsenic (As)	≤ 0.5 mg/kg	ICP-MS
Cadmium (Cd)	≤ 0.5 mg/kg	ICP-MS
Mercury (Hg)	≤ 0.1 mg/kg	ICP-MS
Residual Solvents	Meets USP requirements	GC
Packaging & Services
Minimum Order Quantity (MOQ)	1 kg	-
Free Sample	Available (10-20g/bag)	-
Standard Packaging	1 kg/bag, 5 kg/bag, 25 kg/drum	-
Shelf Life & Storage	24 months in sealed container at cool, dry place	-
Custom Services	OEM, ODM, Private Label, Custom Blending	-

Note: The specifications above define our standard Pterostilbene Powder product profile. We also provide customization options—such as adjustments to purity levels and particle size distribution—to meet specific formulation requirements. Contact us to request the full Certificate of Analysis (COA) for detailed, batch-specific data and supporting compliance documentation.

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Pterostilbene Powder

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