Frequently Asked Questions/

Stated purity is 99%+, verified by High-Performance Liquid Chromatography (HPLC) at a third-party accredited lab. The measured purity for each batch is documented on that batch's Certificate of Analysis. Batches below specification are rejected and not released.

Compound verification uses two complementary analytical techniques. HPLC quantifies purity by measuring the target compound peak relative to all detected peaks. LC-MS/MS confirms molecular weight and structural integrity by measuring mass-to-charge ratios. Both methods are performed by third-party ISO 17025 accredited laboratories. Endotoxin testing via LAL assay is performed for compounds intended for cell culture applications.

Each CoA documents the compound name, CAS number, molecular formula, molecular weight, HPLC purity with chromatogram, LC-MS identity confirmation with observed versus theoretical mass, batch number, and testing dates. Endotoxin results are included where applicable. Batch data is published on the compound page, and the certificate for a specific batch is available on request — email us with the batch number printed on the vial label.

Lyophilized compounds should be stored at -20°C in a frost-free freezer, protected from light and moisture. Containers should remain sealed until ready for laboratory use to prevent moisture absorption. Temperature fluctuations should be minimized. Each compound's specific storage requirements are noted on the product label and CoA.

All orders ship in protective packaging with tracking provided at time of shipment. Orders are processed within 1–2 business days, and standard domestic US transit is 1–3 business days. International shipping is available to select countries; customers are responsible for import compliance and applicable duties.

All sales are final. Neurolevel does not accept returns or issue refunds — research-grade compounds are sold strictly for in vitro laboratory research. If an order arrives missing, incorrect, or damaged, contact support promptly and we will review the case. Cancellations are only possible by email before shipment; once an order is dispatched, it cannot be changed or cancelled. Full details are on our Refund Policy page.

No. All compounds are sold strictly for laboratory research use only. They are not intended for human or animal consumption, and are not drugs, supplements, or food. Statements have not been evaluated by the FDA. Purchasers must be 21 or older.