Sigma-Aldrich (Shanghai) Trading (revision 8)

Sigma-Aldrich (Shanghai) Trading Co., Ltd. (trading as SIG; sigmaaldrich.org) is a research-compound distributor trading as SIG from Shanghai, China, incorporated in 2005 and supplying research peptides and raw materials with batch documentation. Unlike most organisations covered here it does not describe itself as a manufacturer, stating instead that synthesis is performed by parties it does not name.^[1][2]

The organisation is one of twenty-eight 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]

Incorporated in Shanghai in 2005 and registered in the Pudong New Area, the organisation trades as a distributor rather than as a manufacturer.^[1] Its own material describes a business built on supplying research-grade compounds against a written specification of its own, with synthesis performed by parties it does not name.^[2]

That self-characterisation is unusual among the entities covered on this wiki, most of which describe themselves as manufacturers, and it is recorded here as what it is: a claim about the organisation's own role, published by the organisation. Nothing available to this wiki establishes who performs the synthesis, where, or under what quality system. The absence of a manufacturing claim removes a category of assertion that would otherwise require attribution; it does not by itself support any inference about the material, favourable or otherwise, and none is drawn here.^[2][1]

The documentary base is the registry record, the organisation's own material and purchaser-submitted test reports. No independent coverage has been identified, which is a characteristic of the sector rather than of this entity.

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.

Purchaser reports describe vialled lyophilised material arriving with a batch-specific certificate naming a lot, and across the submitted set the lot string on the certificate has corresponded to the vial label and to the invoice.^[5] That correspondence is a minimum requirement rather than an achievement, and it is recorded only because traceability fails often enough elsewhere in this sector to make its absence the more common finding.

Two documentary practices recur across the submitted set and are the most useful observations available about this organisation. Related substances are reported as an itemised table with retention times rather than as a single aggregate figure, which lets a reader distinguish a profile dominated by one impurity from a diffuse profile of the same magnitude. A stability statement tied to a named storage condition appears on the certificates described across most of the set; a shelf-life statement without a stated condition cannot be checked, and one with a condition can.^[5][6]

Two determinations are described as absent. Counter-ion identity is not quantified on the certificate as issued, and water content is released only on request. Without both, a purity percentage cannot be read as a statement about delivered peptide mass, and that constrains what the documentation supports.^[5][6]