| Identity | Chemical name, molecular formula, molecular weight, appearance, and identification profile | Identity confirmed against an approved reference standard; fine white to off-white powder is commonly specified | HPLC retention time, UV spectrum, and, where required, LC-MS or NMR confirmation | Certificate of Analysis (CoA), specification sheet, analytical method | Reduces the risk of substitution, misidentification, or inconsistent material across import markets |
| Assay and Purity | The concentration of Urolithin A and the level of related impurities | A common commercial benchmark is ≥98.0% by HPLC; the final limit should be agreed in the purchase specification | Validated or qualified HPLC method with batch-specific results | Batch CoA, chromatogram, method validation or method qualification summary | Supports consistent dosing, formulation performance, and buyer-to-buyer comparability |
| Moisture and Water Activity | Moisture content, hygroscopicity, caking tendency, and storage behavior | A practical internal target may be ≤2.0% moisture, subject to stability data and product form | Karl Fischer titration or validated loss-on-drying method; water activity where relevant | CoA, storage-condition statement, packaging specification, stability report | Helps protect powder flow, assay stability, and shelf life during long-distance transport |
| Residual Solvents | Solvents used during synthesis or purification and their final concentrations | Conformance with ICH Q3C solvent limits or applicable national requirements | Validated GC testing with a defined reporting limit | Residual-solvent test report, process declaration, safety data sheet | Important for food, dietary supplement, cosmetic, and pharmaceutical-adjacent applications |
| Elemental Impurities | Lead, cadmium, arsenic, mercury, and other elements relevant to the intended use | Limits should be based on the destination market, daily intake, and applicable food or supplement rules | ICP-MS or ICP-OES performed by a qualified laboratory | Heavy-metals report, laboratory accreditation details, sample preparation method | Provides evidence for toxicological risk assessment and import compliance |
| Microbiological Quality | Total aerobic count, yeast and mold, and absence of specified pathogens | Acceptance criteria should reflect the intended category, such as food, supplement, or cosmetic raw material | Validated microbiological methods and pathogen screening | Microbiology report, hygiene statement, environmental-monitoring summary where applicable | Supports product safety and reduces border or customer-release delays |
| Contaminants and Adulterants | Pesticides, mycotoxins, allergens, undeclared actives, and cross-contamination risks | Risk-based testing plan established according to raw materials, process, and destination regulations | Multi-residue LC-MS/MS or GC-MS/MS and documented allergen-control review | Contaminant report, allergen statement, GMO statement, BSE/TSE statement where requested | Helps satisfy retailer, importer, and finished-product quality requirements |
| Manufacturing Controls | Quality system, batch traceability, change control, deviation handling, and supplier qualification | Documented GMP-based controls appropriate to the intended application | Quality audit, certification review, batch-record review, and traceability exercise | GMP certificate, quality agreement, audit report, change-notification procedure | Improves supply continuity and makes quality problems easier to investigate |
| Stability and Shelf Life | Assay, impurity profile, appearance, and moisture changes over time | Shelf life should be supported by real-time and/or accelerated stability data rather than a fixed generic claim | Testing under defined temperature, humidity, light, and packaging conditions | Stability protocol, study summary, retest date or expiry date, storage instructions | Supports inventory planning across different climates and shipping routes |
| Packaging and Logistics | Container-closure integrity, tamper evidence, lot coding, net weight, and transport conditions | Double sealed, food-contact-compatible inner packaging with protective outer packaging is commonly requested | Packaging inspection, weight verification, seal testing, and shipment-condition review | Packing list, lot traceability record, transport specification, SDS | Reduces moisture exposure, labeling errors, and customs-handling risks |
| Regulatory Classification | Whether the material is intended for food, dietary supplement, cosmetic, research, or another regulated category | A separate market-specific assessment is required; regulatory status is not automatically identical across countries | Review of current laws, permitted-use lists, novel-food requirements, and importer obligations | Regulatory statement, intended-use declaration, composition dossier, safety assessment documents | Prevents unsupported claims and reduces the risk of rejected shipments or relabeling |
| Claims and Labeling | Ingredient name, serving amount, recommended use, warnings, and structure/function or health claims | Claims must be supported by applicable legislation and should not imply disease treatment or prevention without authorization | Regulatory label review and substantiation-file assessment | Label copy, claims substantiation, safety information, translation review | Allows the same bulk ingredient to be adapted responsibly for different markets |
| Batch Release and Testing | Sampling plan, release decision, out-of-specification handling, and independent confirmation testing | Each lot should be released against an agreed specification before shipment | Supplier testing plus periodic third-party verification or customer identity testing | Final CoA, sample retention policy, deviation and OOS procedure | Creates an auditable quality trail for distributors and finished-product manufacturers |