MT-II (Melanotan II) (10mg) Lot MT2042325: Certificate of Analysis (COA)
Paramount Peptides · tested Apr 29, 2025 by Janoshik · Older lot
This page summarizes the third-party lab report for lot MT2042325 of MT-II (Melanotan II) (10mg) sold by Paramount Peptides. The lot number on this page should match the lot printed on the vial label. Don't rely on this summary alone: use the button to open the lab's own record and compare the lot, date and results.
MT-II (Melanotan II) (10mg) lot MT2042325 test results, explained
Every result printed on this certificate, as reported by Janoshik, with a plain-English note on what the test measures. "Pass" and "specification" wording comes from the certificate; where the lab prints no pass/fail, we say so.
| Test | Result on the certificate | What it measures | This lot |
|---|---|---|---|
| HPLC purity | 99.417% | HPLC separates the sample into its components; purity is the share of the detected signal that sits in the main peak. On its own it doesn't show which molecule that peak is. That's what the identity test is for. | No pass/fail printed; reported value at or above 98% |
| Identity | Not reported | This certificate doesn't report an identity test, so it doesn't confirm which molecule is in the vial. Purity and quantity alone can't tell you that. | Not tested on this certificate |
| Quantity (measured content) | Melanotan 2 10.98 mg | How much peptide the lab measured in the vial, compared with the amount printed on the label. | Reported |
Lot and report details
| Lot / batch number | MT2042325 |
|---|---|
| Product (as labeled by vendor) | MT-II (Melanotan II) (10mg) |
| Labeled vial size | 10 mg |
| Testing laboratory | Janoshik |
| Tests requested | Assessment of a peptide vial or vials |
| Testing ordered | Apr 24, 2025 |
| Sample received by lab | Apr 28, 2025 |
| Report date | Apr 29, 2025 |
| Task number + unique key | Task #63504, key UZ2V9DW2C8IB |
| Lab-record check | Not checked automatically. Open the lab's record to compare. |
| Vendor | Paramount Peptides |
| Verify | Open Janoshik's record ↗ |
The certificate itself
About Janoshik
An independent analytical lab based in Prague, Czech Republic (Janoshik s.r.o.). Each report carries a task number and a unique verification key.
Accreditation: No accreditation is printed on these reports, and we found no published ISO/IEC 17025 accreditation for the lab (checked Oct 7, 2026).
Tests: On the reports here: HPLC purity and the measured content per vial. Other tests appear only when they're listed under Results.
How to verify: Go to janoshik.com/verify and enter the unique key printed on the report (the report's QR code links there too). Janoshik blocks automated checks, so we haven't matched these records ourselves.
Open Janoshik's record ↗Lab info from: janoshik.com · checked Oct 7, 2026.
MT-II (Melanotan II) (10mg) lot history at Paramount Peptides
All 8 certificates we have for this product from Paramount Peptides, newest first. The chart plots HPLC purity by report date (lots without a purity figure are left out). This lot is highlighted.
| Lot | Report date | Lab | HPLC purity |
|---|---|---|---|
| MEL209032025-J | Jul 6, 2026 | Accumark Labs | 99.72% |
| MT210N053126 | Jun 23, 2026 | Accumark Labs | 99.92% |
| MT210N111225 | Nov 25, 2025 | Janoshik | 99.50% |
| MT210N090925 | Sep 23, 2025 | Janoshik | 99.81% |
| MT210N072125 | Aug 5, 2025 | Janoshik | 99.62% |
| MT210A060225 | Jun 10, 2025 | Janoshik | 99.59% |
| MT210n042525 | May 7, 2025 | Janoshik | 99.41% |
| MT2042325 | Apr 29, 2025 | Janoshik | 99.42% |
What to check on your vial
- The lot number on the vial label reads MT2042325, character for character.
- The product name and vial size on the label match MT-II (Melanotan II) (10mg) (10 mg).
- The lab's own record (www.janoshik.com, code Task #63504, key UZ2V9DW2C8IB) shows the same lot, report date (Apr 29, 2025) and results as this page.
- The report date is a date you'd expect for your purchase: a much older certificate may belong to an earlier lot.
- The identity line names the compound you expect. If it's "Not reported", the certificate doesn't confirm which molecule is in the vial.
- The certificate is a clean document: no mismatched fonts, edited numbers or a missing verification code.
How to check this COA in under a minute
- Find the lot number on your vial label and confirm it reads MT2042325.
- Open Janoshik's record with the button above, or go to www.janoshik.com and enter Task #63504, key UZ2V9DW2C8IB.
- Compare the lot number, test date, purity and identity result with the table above. They should be identical.
- New to COAs? Read How to read a peptide COA for what HPLC purity and mass spec identity mean.
Questions about lot MT2042325
What HPLC purity did MT-II (Melanotan II) (10mg) lot MT2042325 test at?
Janoshik reported 99.42% HPLC purity for lot MT2042325 in a report dated Apr 29, 2025.
How do I verify the COA for lot MT2042325?
Go to www.janoshik.com and enter the task number + unique key Task #63504, key UZ2V9DW2C8IB. The lab's own record should show lot MT2042325 with the same dates and results as this page.
Is lot MT2042325 the newest MT-II (Melanotan II) (10mg) lot from Paramount Peptides?
No. The most recent MT-II (Melanotan II) (10mg) certificate we have from Paramount Peptides is lot MEL209032025-J. Your vial label tells you which lot you have.
Does this certificate apply to my vial?
Only if the lot number printed on your vial reads MT2042325 exactly. A certificate of analysis covers one lot; it says nothing about other lots of the same product.
Other lots and COAs
MT-II (Melanotan II) (10mg) at Paramount Peptides
Lab-tested lot MT2042325 · 99.42% HPLC purity · Janoshik
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