For laboratory & research use only · Worldwide cold-chain shipping

Research-grade reference materials

Purity you can verify, batch after batch.

Every lot is third-party tested by HPLC and mass spectrometry, with the full Certificate of Analysis published before it ships.

Browse the catalog
3rd-partytested lots
≥99%HPLC purity target
48hglobal dispatch

Catalog

Featured reference materials

Cofactors & Reagents

Glutathione (Reduced, GSH)

SKU · QCL-CF-600MG-001 600 mg / vial
≥98% (HPLC)Out of stock
Cofactors & Reagents

myo-Inositol

SKU · QCL-CF-500MG-001 500 mg / vial
≥99% (HPLC)In stock
Cofactors & Reagents

NAD⁺ (β-Nicotinamide Adenine Dinucleotide)

SKU · QCL-CF-100MG-001 100 mg / vial
≥98% (HPLC)In stock
Metabolic Research

Retatrutide — Reference Standard

SKU · QCL-MR-10MG-002 10 mg / vial
≥99% (HPLC)Pre-order
Metabolic Research

Tirzepatide — Reference Standard

SKU · QCL-MR-10MG-001 10 mg / vial
≥99% (HPLC)In stock
Research Peptides

Thymosin β4 (TB-500)

SKU · QCL-RP-5MG-002 5 mg / vial
≥98% (HPLC)Pre-order

Why QCL

A transparent supply chain, end to end

Third-party tested

Independent HPLC purity and mass-spectrometry identity confirmation on every lot.

Published COAs

The full certificate of analysis is linked on every product page before it ships.

Cold-chain logistics

Temperature-controlled packing and worldwide dispatch, typically within 48 hours.

Consistent lots

In-house lyophilization and traceable batch coding keep specifications reproducible.

Journal

Latest from the lab notebook