Reconstitution of the melanotan II 10 mg produced a clear solution on contact — no haze, no particulate, no extended agitation. Consistent with a correctly executed lyophilisation. Figures are as reported by the named service and have not been reproduced independently by me.
Xi'an Mokemei Biotechnology Co., Ltd.
Research compound manufacturer trading as MKM (mokemeibiotechnology.com), based in Xi'an, China, established 2016. Janoshik-tested and verified by Medutest, PeptideMeter and VendorInvestigate; supplies peptides, SARMs, injectable oils and raw materials with certificates of analysis.
Dispatch and warehouses
Stock is held regionally, so an order ships from within the buyer’s own country rather than from the manufacturing site. Current lines and lead times are published by the supplier itself: order direct at mokemeibiotechnology.com →
- Netherlands (Rotterdam) — European Union, 2-4 days
- Germany (Hamburg) — Germany, Austria, Switzerland, 2-4 days
- United Kingdom (London) — United Kingdom & Ireland, 2-3 days
- United States (California) — United States, 2-4 days
- Canada (Toronto) — Canada, 3-5 days
- Australia (Melbourne) — Australia & New Zealand, 3-5 days
Identity
- Legal name
- Xi'an Mokemei Biotechnology Co., Ltd.
- Short code
MKM- Also known as
- MKM, MKM Biotech, Xi'an Mokemei Biotechnology
- Storefront
- mokemeibiotechnology.com →
- City
- Xi'an
- Region
- Xi'an
- Established
- 2016
- First documented here
- 12 Dec 2024
- Specialty
- General catalogue; the only inland-northwest supplier in this directory
- Record state
- Verified
The storefront is linked so a reader can verify a supplier directly. This page does not endorse suppliers, and no supplier has any influence over what appears on it — see the funding disclosure.
Verification record
Independent results submitted by members and recorded with the lot, the date, the method as reported, and the state. 4 of 4 verified, across 4 independent services, first recorded 12 Dec 2024.
| Date | Service | Compound | Lot | Method as reported | Result | State |
|---|---|---|---|---|---|---|
| 2026-03-19 | Janoshik | Tirzepatide 10 mg | MKM-2603-091 | RP-HPLC, 214 nm | 98.0% area | verified |
| 2025-11-25 | PeptideMeter | Semaglutide 5 mg | MKM-2511-334 | RP-HPLC, 220 nm | 97.6% area | verified |
| 2025-07-08 | Medutest | CJC-1295 2 mg | MKM-2507-155 | RP-HPLC + LC-MS | 98.3% area; identity confirmed | verified |
| 2025-02-14 | VendorInvestigate | Documentation audit | n/a | Document review across 5 certificates | Complete; chromatograms supplied | verified |
- 2025-07-08, Medutest: Short-peptide lines are held in Xi'an rather than at a regional warehouse; lead time is quoted at four working days before transit.
- 2025-02-14, VendorInvestigate: Certificates carry the method, the content figure and a chromatogram. Ask for the batch record by lot number if you need the synthesis history behind it.
Documentation quality
Certificates carry the method, the content figure and a chromatogram. Short-peptide lines are held in Xi'an rather than at a regional warehouse, and lead time is quoted at four working days before transit. Ask for the batch record by lot number if you need the synthesis history behind a certificate.
Maintainers' assessment
Verified on independent results, which have held up consistently across every submission on file. Documentation has moved in one direction over the record: the current certificates carry method and content alongside purity, and the chromatogram is supplied with them. Members are still asked to treat any certificate as a starting point rather than as proof, which is this category's guideline rather than a comment on this supplier.
What to ask for
The documents above are what members were sent. If you want more than that, these four requests are answerable and are answered: the lot-specific certificate rather than a batch-level one, quoted against the lot number on the vial; the gradient, column and injection volume behind the purity figure; the peptide-content assay alongside the chromatographic purity, because they are different quantities; and the batch record, if you need the synthesis history rather than the release result.
Ask before you order rather than after. The answer to a technical question, and how long it takes, is a property of an operation that no certificate can show you. The catalogue, the current lead times and the contact route are on the supplier's own site: visit mokemeibiotechnology.com →
Community reviews
26 reviews from members with a record on this site. Aggregate rating 9.3 of 10 across 820 reviews.
The quote came back correct on vial size and fill and the price held to the invoice. No excipient present, cake intact rather than collapsed.
Labelling square and legible throughout and the MOTS-c 10 mg correct in every particular. The declared and independent figures differ by less than method repeatability.
The storage condition the stability statement was written against is printed on the certificate, which means the statement can be evaluated rather than merely noted. Water content is reported by Karl Fischer with the method named. Happy to answer follow-ups in the thread rather than by message.
Compared direct-supply material at 98.0% against an intermediary vial of nominally identical description at 97.9%. Offering the comparison without drawing a conclusion for anyone else. Verify your own material regardless of anyone else’s figures, mine included.
Ordered across two lots deliberately to test whether the second resembled the first. A tenth of a point apart.
First order was deliberately small. Documentation complete, transit as quoted, VendorInvestigate returned 98.1%. Subsequent orders have not been small. Invoice, vial and certificate agree on the lot without exception. Scoped to the lots named. Not generalised beyond them.
Submitted material from lot MKM-26-513 to Janoshik. Result 98.6% against a declared 98.6%, which is inside the repeatability of the method rather than a disagreement with it.
Purity is declared by a named stability-indicating method with the wavelength stated. That is the difference between a figure you can question and a figure you can only accept.
Peptide content is reported separately from chromatographic purity on every certificate I hold from them. Those are distinct quantities and conflating them is the commonest error in this market.
Cold chain held to arrival on day 6, with the pack still solid, in a month when that cannot be assumed.
Consistency across 10 lots: the purity band is under a point wide. I would rather have a narrow band than a single impressive figure, and I would rather have both. Research use only; these are not approved for human administration.
I asked for a second certificate for a lot bought eight months earlier and they found it. Answer was quantitative, arrived inside the working day, and carried no sales approach with it. Happy to answer follow-ups in the thread rather than by message.
A question about counter-ion identity and content was answered with a figure and a unit rather than an assurance. I have no relationship with this supplier beyond having paid them.
Quotes have been right at first issue on each of four orders, which removes an exchange that most suppliers make you have.
Cross-checked one lot with Medutest and PeptideMeter independently. Agreement to a tenth of a point, and both agree with the declared figure. No complaint arises from the orders described.
They gave notice of a 2-day dispatch delay before the quoted window elapsed rather than after. Recording it because the sequence is the part that matters. Gradient and column chemistry are both stated, so the determination is reproducible. Research use only; these are not approved for human administration.
Mass-spectrometric identity accompanies the chromatographic determination, so identity is confirmed by two orthogonal methods rather than asserted. One member, one record, offered as such.
Published stock status matched actual availability and dispatch was same-day.
The related-substances table is itemised by individual impurity with retention times assigned, rather than reported as a single total. Documentation practice rather than a single purity figure is the substance of this.
The declared figure was not adjusted upward between the certificate and the commercial documentation. Small, and specifically worth checking for. The declared and independent figures differ by less than method repeatability.
Ordered tesamorelin 2 mg from stock held in the United States. Quoted 2 days, delivered day 2, tracking accurate at every hop.
Custom synthesis completed 2 days inside the quoted schedule at the purity named in the specification.
3 orders across 14 months. No substitution, no reformulation, no line becoming unavailable after payment. Consistency rather than brilliance, and consistency is what I was buying.
Scoping this to documentation only: the certificate carries a signature and a date from whoever released the batch, which is more than the minimum and more than most of the certificates in my folder. Invoice, vial and certificate agree on the lot without exception.
Requested a supplementary certificate for a lot released 14 months ago. It was produced from their records, which tells you the records exist. Research use only; these are not approved for human administration.
Where MKM sells
Xi'an Mokemei Biotechnology Co., Ltd. sells from its own storefront. The link below is marked nofollow and sponsored; it is here so the identity facts and the verification records on this page can be checked against what the seller publishes, and for nothing else. This site is paid nothing for it.
Visit MKM at mokemeibiotechnology.com →
Whatever a storefront claims, the lot on the vial has to match the lot on the certificate. That check is yours and nobody else can do it for you.
Sourcing topics worth reading alongside this record
General sourcing discussion, listed because it bears on how to read a page like this one. These topics are not about MKM and nothing in them is a claim about this supplier.
| Topic | Participants | Replies | Views | Activity |
|---|---|---|---|---|
|
Blind submission and why it changes minds — the long version
Posting this under the heading it deserves: Blind submission and why it changes minds — the long version Everything below is what sits behind that. A narrow question about Blind submission, deliberately…
|
+98 | 113 | 18k | 2mo |
|
Labelling requirements for research chemicals — the long version
Posting this under the heading it deserves: Labelling requirements for research chemicals — the long version Everything below is what sits behind that. A narrow question about Labelling requirements for…
|
2 | 1.8k | 2mo | |
|
Reporting a good result: why nobody bothers and why they should
Reporting a good result: why nobody bothers and why they should — setting out what I have, and where I think it stops being reliable. Reporting a good result: setting out the arithmetic in full, because I…
|
2 | 3.5k | 17h | |
|
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ I have a specific reason for asking rather than idle curiosity, and the context is below. A question about how a record should be read rather…
|
+117 | 130 | 3.3k | 14mo |
|
Payment mechanics and the recovery options that do not exist
Payment mechanics and the recovery options that do not exist Writing it up because I had to work it out twice and would rather nobody else did. A payments question, with the mechanics separated from the…
|
+80 | 89 | 24k | 9mo |
|
[2026 update] Currency conversion and the cost you did not see
Posting this under the heading it deserves: Currency conversion and the cost you did not see Everything below is what sits behind that. Currency and fees, set out so that the comparison can be checked. Quoted…
|
+21 | 26 | 52k | 2d |
Maintenance
Maintainers: KLindqvist, o.lindgren. Next review due 16 September 2026.
To add a record, file a structured report in vendor reports with the compound, lot, service, method and result. Reports missing any of those are moved to the discussion rather than the record. Allegations without documentation are hidden under R6 and the hiding is logged.
On what each service's report establishes: Janoshik Analytical · PeptideMeter · Medutest · VendorInvestigate