The World’s Largest
Peptide Manufacturer

GL Biochem maintains a longstanding reference relationship with Bachem AG — the Swiss global leader in peptide chemistry. As one of the world's foremost peptide manufacturers ourselves, we supply Bachem's European distribution network with select Fmoc amino acid building blocks and protected intermediates that complement their own synthesis portfolio. Bachem's rigorous quality standards align closely with our own USP/EP/ChP testing framework, making cross-referencing of analytical data straightforward and legally robust.

Specifically, GL Biochem provides Bachem with uncommon unnatural amino acids and exotic Fmoc-protected derivatives where our Shanghai facility's high-throughput synthesis gives us a substantial cost and lead-time advantage. In return, Bachem serves as a reference laboratory for method comparison and interlaboratory validation studies — a relationship that strengthens the credibility of our analytical reports in regulated markets.

Merck KGaA is GL Biochem's primary supplier of HPLC-grade solvents, analytical reference standards, and speciality laboratory reagents used across our QC laboratories in Shanghai. Through the MilliporeSigma and Sigma-Aldrich brands, Merck supplies certified reference materials, Karl Fischer reagents, ICP-MS calibration standards, and LAL reagent water used in our endotoxin testing programme.

Select GL Biochem Fmoc amino acid products are listed as third-party alternatives within Merck's Sigma-Aldrich catalogue, expanding our reach into academic and pharmaceutical laboratory markets across Western Europe and North America that rely on Merck's procurement infrastructure.

Sigma-Aldrich is GL Biochem's critical partner for TraceCERT® analytical reference standards, HPLC-grade solvents, and LAL reagent water that underpin our entire QC release programme. Every GL Biochem product that reaches a customer has been tested using Sigma-Aldrich-sourced certified reference materials with full NIST traceability.

Over 40 GL Biochem Fmoc amino acid building blocks are listed directly on the Sigma-Aldrich catalogue as verified third-party alternatives — one of the most prestigious channel partnerships in the global amino acid supply industry, granting GL Biochem access to Sigma-Aldrich's 200-country researcher network.

Watanabe Chemical Industries of Japan is one of GL Biochem's oldest raw material partners, supplying us with high-purity L- and D-amino acid starting materials as well as speciality coupling reagents used in solid-phase peptide synthesis (SPPS). Their amino acid portfolio, manufactured under strict Japanese pharmacopoeial standards (JP), feeds directly into our Fmoc and Boc protected amino acid production lines in Shanghai.

GL Biochem and Watanabe have co-developed several proprietary synthesis protocols for N-methylated and beta-amino acid derivatives — compounds notoriously difficult to produce at scale. The joint IP from this collaboration is licenced for internal use by both companies, enabling GL Biochem to offer one of the broadest catalogues of Fmoc unnatural amino acids — over 200 SKUs — at consistently competitive pricing.

Iris Biotech GmbH (Marktredwitz, Germany) is a specialist supplier of Fmoc-protected building blocks, SPPS reagents, and peptidomimetics. GL Biochem and Iris Biotech operate as complementary rather than competing businesses — Iris excels in small-quantity, exotic building block synthesis while GL Biochem focuses on large-scale catalogue and custom production.

GL Biochem manufactures several high-volume Fmoc amino acids on behalf of Iris Biotech for inclusion in their German catalogue. In turn, Iris Biotech provides GL Biochem customers in Europe with local warehousing and distribution, dramatically reducing delivery times into Germany, France, Switzerland, and the Netherlands.

DHL Express is GL Biochem's preferred global logistics partner for time-critical peptide and amino acid shipments. Through our corporate account with DHL's Shanghai International hub, we benefit from priority cold-chain handling, dedicated dry-ice replenishment services, and customs pre-clearance documentation support across more than 50 destination countries.

Every GL Biochem order ships with full DHL tracking from Zhang Jiang. Our account includes DHL's Life Sciences & Healthcare protocol, ensuring peptide samples travel under monitored conditions. For large wholesale shipments we use DHL freight for pallet-level cold-chain delivery to pharmaceutical loading docks across Europe, the USA, and Australia.