Nutrition BioTech Publishes Urolithin A Specification and COA Guide for Bulk Urolithin A Powder Buyers

Guide covers route-specific specifications and COAs for bulk Urolithin A buyers; U.S. ready stock available with a 1 kg minimum order.

POMONA, CA, UNITED STATES, November 2, 2026 /EINPresswire.com/ — Nutrition BioTech (NaturalBestBio), a manufacturer and supplier of nutraceutical ingredients, has published a technical guide to bulk Urolithin A powder specifications and certificates of analysis (COAs), organized by production route. The guide is written for purchasing and quality teams at supplement brands and contract manufacturers who need to compare documents from different bulk Urolithin A powder suppliers.

I. Why the Production Route Matters for Bulk Urolithin A Powder
Most specification sheets for bulk Urolithin A powder list an assay figure such as “98% by HPLC.” That figure does not show how the remaining material is made up. Urolithin A (CAS 1143-70-0) is produced commercially by chemical synthesis or by fermentation, and each route can leave different residues. The specification for one synthesis-route material, published in FDA’s response to GRAS Notice No. 791, lists route-specific limits, including a synthesis intermediate, copper from the catalyst, aluminum and several named process solvents. Fermentation-route material raises different questions, such as residual ellagic acid and related urolithins.

II. What a Bulk Urolithin A Powder COA Should Show
The guide lists seven items buyers can check on any supplier’s documents:
– Identity confirmed by a structural method such as ¹H NMR or LC-MS, not by HPLC retention time alone
– Assay by HPLC against a reference standard, with the method stated
– Impurities specific to the stated production route
– Lead, cadmium, arsenic and mercury reported as numeric limits
– Residual solvents named individually
– Microbiology, loss on drying and appearance
– Lot number, test dates and the issuing laboratory

III. Nutrition BioTech’s Bulk Urolithin A Powder: Key Terms
Ingredient: Urolithin A powder, CAS 1143-70-0
Assay: NLT 98.0% by HPLC; identity by HPLC and ¹H NMR
Production routes: Both chemical synthesis and fermentation options are available. The route for the supplied material is specified in the corresponding product documentation.
Stock: Ready stock held in the United States
Minimum order: 1 kg
Packaging: 20 kg fiber drum with inner plastic bag
Dispatch: Within 3 working days of purchase order
Quality system: ISO 22000:2018, FSSC 22000, HACCP; certificates on request
Documents: Every lot ships with a lot-specific Certificate of Analysis. The public specification sheet is not a batch COA; lot COAs and supporting records are available for qualified buyer review before purchase.

IV. Buyer Resources
Urolithin A specification and COA guide, by production route:
https://www.naturalbestbio.com/urolithin-a-specification-coa-by-production-route.html

Product specifications and sample requests:
https://www.naturalbestbio.com/pomegranate-derived-metabolite-pd548253448.html

V. About Nutrition BioTech (NaturalBestBio)
Nutrition BioTech (NaturalBestBio) manufactures and supplies nutraceutical ingredients, including bulk Urolithin A powder, NMN powder and ultramicronized palmitoylethanolamide (PEA), for B2B buyers. The company operates from 1601 W. Mission Blvd, Suite 103, Pomona, CA 91766, United States. Website: https://www.naturalbestbio.com

Sales Team
Nutrition BioTech (NaturalBestBio)
+1 909-745-1357
sales@naturalbestbio.com

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