Chinese Peptide Company

Chinese Peptide Company Co., Ltd. (trading as CPC; chinesepeptidecompany.net) is a peptide manufacturer trading as CPC from Hangzhou, Zhejiang, China, incorporated in 2001, with a catalogue spanning research peptides and custom synthesis and a documented history in the peptide-chemistry sector.^[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]

Incorporated in 2001, the organisation is one of the two oldest covered on this wiki and predates the research-peptide retail market substantially.^[1] That history is the strongest element of its notability case: an entity with two decades of continuous operation in peptide chemistry is describable from more than its own marketing, and its name appears in technical contexts unconnected with the research-compound trade.

The name is generic to the point of being a claim: "Chinese Peptide Company" reads as a description of a category rather than an identifier. Editors have discussed whether an encyclopedia should use it as an article title at all, given the risk that a reader takes it as a generic reference; the conclusion was that the registered legal name is the registered legal name, and that a hatnote is the appropriate remedy.

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 lyophilised material in Type I glass vials with crimped closures, accompanied by a batch certificate that in this case has more often than elsewhere included a water figure alongside the purity figure.^[5] Where present, a water figure is what makes a purity figure interpretable as a mass, and its inclusion is a documentation practice worth recording because it is uncommon.^[6]

Custom synthesis appears in the organisation's own listings, which if accurate implies in-house synthesis capability rather than repackaging. This wiki has no independent corroboration of that, and self-published statements about capability are not evidence of it.^[2]

The presence of a custom-synthesis line is the distinguishing catalogue feature. A supplier that will synthesise an arbitrary sequence is doing something different from one that lists a fixed range, and the two should not be described in the same terms.^[2]

Reports submitted on CPC material to July 2026 span a wider set of analytes than for most organisations covered here, including several sequences outside the incretin range. Reported area percent figures have been high, and in the subset where the certificate reported both purity and water, purchaser-computed peptide content figures have been consistent with the certificate's own arithmetic.^[5][6]

That is the strongest form of documentary agreement recorded on any of these articles, and it is still not a statement about the organisation's output: the samples were purchaser-selected and were not drawn blind.^[5][7]

The PeptidePedia tally records 812 self-reported submissions to July 2026 — among the higher figures on the wiki. Recurring positive themes are certificate completeness and the breadth of the catalogue; recurring complaints concern lead times on custom work.^[4] The tally is self-selected and measures reception, not quality.^[4]

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]

Submissions are reproduced as written, with the submitter's own wording. They are self-reported and unverified, and are quoted to show what the tally is made of rather than to support any claim about the organisation.

Reordered on the strength of the last one and got an identical result. Repeatability is the product.

Peptide content reported at 98.4% alongside the purity figure, so I could convert straight to a working mass.

Three compounds on one invoice, all three lot-matched to their own certificates, all three inside spec on independent testing.

They report purity by RP-HPLC with the wavelength stated and peptide content separately. Two different numbers, correctly separated.

Pleased to find they hold stock in Australia. Domestic dispatch, day 3, no customs step at all.

Quoted 5 days, arrived in 4. Tracking updated at every hop from dispatch to door.

Same lot documentation as the factory ships, but out of their warehouse in the Netherlands, so it landed on day 4.

Fifth order from them, all selank 10 mg. Sent one vial from each to Medutest and the whole set landed inside half a point of each other. That flatness is exactly what I pay for.

Queried the related-substances total on lot LOT-26-926; they came back with method, column and detection limit. That depth is rare.

Ordered on a Monday from their warehouse in the Netherlands and it was here by day 4. That is the whole case for regional stock.

Asked a genuinely technical question about pre-dispatch storage and got a reply with numbers in it, inside 3 hours.

Weighed 6 vials from the CJC-1295 2 mg order against label. Every one inside 2% of stated mass. Fill consistency is harder than purity and they have it.

Asked them to hold an order until I confirmed a lot number and they did, without fuss and without a restocking charge.

Custom synthesis quote came back with a realistic timeline and they beat it. Purity on delivery matched the signed spec.

Cold pack was still hard on arrival in Dublin on day 3. My logger never went above 5°C across the whole run.

Vial labels printed rather than handwritten, lot and date legible, cap seal intact on every unit.

Their warehouse in the United Kingdom carries the lines I reorder, so there is no wait on a factory run. Day 5 every time.

Dispatched from their warehouse in the United Kingdom rather than from the factory, so the tirzepatide 15 mg was with me on day 3.

Submitted the LL-37 5 mg to Medutest blind, without telling them the source. 98.0% against a stated 97.6%. The number holds up when nobody knows whose vial it is.

8 lots logged now, purity 97.8 to 97.9%. A band that tight is worth more to me than one spectacular number.

Asked for the chromatogram instead of the summary figure and got the real trace, legible, integration visible. They send it without hesitating.

Their warehouse in Canada had the BPC-157 5 mg in stock and it shipped the same afternoon. Tracking never left the country.

First order, deliberately small, retatrutide 5 mg only. Documentation, transit and a Janoshik result at 100.1% all checked out, so the next one will not be small.

Support answered on a Sunday, correctly, with the batch record attached. That is well beyond what I expected.

The semax 10 mg arrived on day 3 with the cold pack intact and the seal unbroken. Straightforward, exactly as described.

Their raw material tested 98.4% against a reseller vial of nominally the same compound at 98.4%. Going direct is the whole argument.

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][6]

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][5]

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,^[8] and a testing laboratory's competence is a matter of accreditation to a recognised standard rather than of self-description.^[7] 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 CPC

• 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.