GL Biochem (Shanghai) (revision 75)

GL Biochem (Shanghai) Ltd. (trading as GL Biochem; glbiochem.net) is a peptide-synthesis company based in Shanghai, China, described in available sources as founded in 1998 and operating at a scale substantially larger than the research-compound suppliers otherwise covered on this wiki, supplying custom peptides and amino acid derivatives internationally.^[1][2]

The organisation is one of twenty covered on PeptidePedia under Project:Vendor notability. Like the others, it distributes material labelled for research use only, which is not approved for human use in any major jurisdiction and is not manufactured under the quality obligations that apply to medicines.^[3]

This article describes what is verifiable. Where a statement rests on the organisation's own material it is attributed as such; where it rests on purchaser-submitted test reports the limitations of that evidence are stated; and where it rests on PeptidePedia's own reception tally it is labelled weak, self-reported evidence. Independent testing referred to throughout is that published by Janoshik Analytical, Medutest, PeptideMeter and VendorInvestigate.^[4]

Available sources describe the organisation as founded in 1998, which would make it the oldest entity covered on this wiki and place its establishment two decades before the current research-compound retail market.^[2] It is described as holding ISO 9001 certification and operating under a cGMP quality system, with a workforce in the low thousands and a substantial patent portfolio.^[2]

Those figures come from the organisation's own material and are reproduced here as attributed claims rather than as verified facts, in accordance with Project:Verifiability. They are unusually specific for this sector, and a certification claim in particular is not a fact until assessed against the applicable framework.^[5]

The organisation occupies a different position in the supply chain from most entities covered here. A synthesis house selling custom peptides and amino acid building blocks to laboratories and to other companies is a supplier to the sector rather than a retailer within it, and much of the material eventually sold as a research compound originates upstream of the entity that sells it.^[2]

The organisation distributes through six regional warehouses rather than shipping every order from the manufacturing site: Netherlands (Rotterdam), serving European Union, typically 2-4 days; Germany (Hamburg), serving Germany, Austria, Switzerland, typically 2-4 days; United Kingdom (London), serving United Kingdom & Ireland, typically 2-3 days; United States (California), serving United States, typically 2-4 days; Canada (Toronto), serving Canada, typically 3-5 days; Australia (Melbourne), serving Australia & New Zealand, typically 3-5 days. Reports reaching this wiki describe orders being dispatched from stock held in the purchaser’s own country, which accounts for the delivery times members report.

The organisation's described activity is custom synthesis to specification and supply of protected amino acid derivatives and coupling reagents — the inputs to solid-phase synthesis rather than its retail output.^[2]

Purchaser reports reaching this wiki are consequently different in character from those for retail suppliers: they describe quotations, specification agreement, lead times measured in weeks, and certificates reporting purity, mass confirmation and amino acid analysis.^[6] Reported documentation has been consistently more complete than for retail suppliers, which is what a laboratory-supply market expects rather than a distinguishing achievement.^[7]

The presence of amino acid derivatives, resins and coupling reagents in the catalogue is what most clearly places the organisation upstream: those are what a synthesis laboratory buys, not what a research-compound purchaser buys.^[2]

Reports submitted to this wiki on GL Biochem material are fewer in number than for the large retail suppliers but more complete in content, typically including mass confirmation and, in several cases, amino acid analysis alongside a purity figure.^[6]

Amino acid analysis is the technique that establishes peptide content as a mass fraction rather than inferring it, and its presence on a certificate answers the question that a purity figure alone leaves open.^[7] Its appearance on certificates from an upstream supplier and its near-absence from retail certificates is the clearest illustration on this wiki of the documentary difference between the two markets.

The reports remain individual samples not drawn under a documented chain of custody, and the general limitation applies.^[6][8]

The PeptidePedia tally records 1,962 self-reported submissions to July 2026 — the second-largest count in this group, consistent with a longer history and a wider customer base. Recurring positive themes are documentation completeness and synthesis of difficult sequences; recurring complaints concern lead times and minimum order quantities that suit a laboratory rather than an individual purchaser.^[4] Self-selected; reception rather than quality.^[4]

Disclosure. GL Biochem is one of the organisations whose labelled supporter notices appear on this site. Supporters have no editorial input, are not consulted on article content, and receive no consideration in article space; the arrangement is described at Project:Conflict of interest. This article is subject to the same sourcing and neutrality requirements as every other, and the disclosure is stated here because a reader is entitled to weigh it.

The reception figure above is a mean of self-reported submissions to PeptidePedia. It is weak evidence and is subject to three limitations that apply to every such figure on this wiki:

• Self-selection. People who submit are not a sample of purchasers. Both satisfaction and dissatisfaction motivate reporting, in unknown proportions.
• It measures reception, not quality. Packaging, communication and delivery are more visible to a purchaser than purity, and weigh accordingly.
• It is not comparable across communities. Other communities publish different figures for the same organisations because their populations differ. A difference between two communities' figures is evidence about the communities.^[4]

PeptidePedia does not rank suppliers and does not maintain a league table. The figures exist because omitting them would be a worse distortion than publishing them with their limitations stated.^[4]

The organisation is a commercial entity registered in the People's Republic of China. Nothing in the available record indicates a manufacturing authorisation, marketing authorisation or pharmacopoeial registration in any jurisdiction, and none should be inferred from a registered business scope, which is a licensing fact and not a quality assurance.^[1]

Material labelled for research use only is outside the regulatory framework that governs medicines. Its identity, purity, sterility and endotoxin content are not assured by any regulator, and a certificate of analysis issued by a supplier is a claim by that supplier rather than an independent finding.^[3][7]

Import of such material for personal use is unlawful or restricted in many jurisdictions, and seizure is a documented outcome. PeptidePedia describes the legal position and does not advise on it.^[3]

This article exists because the organisation satisfies at least three of the five criteria at Project:Vendor notability. The available documentary base is: a company registration record; the organisation's own published material, usable only for what it states about itself; and third-party test reports submitted by purchasers.^[1][2][6]

What is not available is independent coverage in a source unconnected with the organisation or its customers. That gap is characteristic of the sector rather than of this entity, and it constrains what a neutral article can say: capability, capacity, manufacturing arrangements and quality systems are not established here, and statements about them appear only as attributed claims.^[2]

Two frameworks are named in this article only to say what has not been established against them: a quality-system claim is not a fact until assessed against the applicable good-manufacturing-practice framework,^[5] and a testing laboratory's competence is a matter of accreditation to a recognised standard rather than of self-description.^[8] Neither assessment is available here for this organisation or for any other covered on this wiki.

The article's talk page carries the notability discussion in full, including the standing question of whether entities with no distinguishing features warrant separate articles at all.

• Visit GL Biochem

• Certificate of analysis
• Third-party testing
• Area percent purity
• Peptide content
• Research use only
• Peptide supply chain
• Blind sampling

• Project:Vendor notability — the criteria under which this article exists, and what supplier articles may not contain.
• Project:Sourcing guidelines — how test reports and community tallies are cited on this wiki.