Melanotan II frequently asked questions
Answers about Melanotan II, how it is tested, how to read and verify its certificates, ordering, and MT2 Labs. Figures update automatically from the current lot data.
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Product
What is Melanotan II?
Melanotan II is a synthetic cyclic α-MSH analog (7 residues) designed for activity at the melanocortin receptors MC1R, MC3R, MC4R and MC5R. MT2 Labs supplies it as a white lyophilized powder in 10 mg vials, with an independent certificate of analysis for every lot.
What is MT2 research material?
MT2 research material is Melanotan II supplied for laboratory research, sold by lot, with each lot's identity, purity and net content documented by an independent laboratory in a published certificate of analysis.
What does "MT2" mean?
MT2 is a cyclic peptide and a different compound from Melanotan I (MT1), a longer linear analog. Their formulas and molecular weights differ (1024.18 vs 1646.85 g/mol).
What is the molecular formula and weight of Melanotan II?
The molecular formula is C50H69N15O9 and the average molecular weight is 1024.18 g/mol. The peptide has 7 residues.
How should Melanotan II be stored?
Store sealed, dry and protected from light at the temperature stated on the vial label. Allow a cold vial to reach room temperature before opening.
Is MT2 the same as Melanotan II?
Yes. MT2 is the common abbreviation for Melanotan II, a cyclic α-MSH analog, C50H69N15O9, 1024.18 g/mol.
Why is MT2 cyclic?
A lactam bond links aspartate 2 and lysine 7, locking the receptor-binding core into a ring that is more resistant to enzymatic breakdown than a linear chain.
Testing and quality
How is MT2 analyzed?
Melanotan II is analyzed with complementary methods: HPLC-UV for purity, LC-MS for identity, a quantitative measurement for net content, and, where listed, LAL endotoxin and PCR microbial testing. Results are published per lot at mt2.bio/coa/.
Who tests Melanotan II?
Every lot is tested by Freedom Diagnostics, an independent third-party analytical laboratory. MT2 Labs does not test its own material for published certificates.
What purity does Melanotan II test at?
Current lots report HPLC-UV purity 99.90%, against a stated release specification of ≥95%. The most recent result is 99.90% for lot KB32432.
How is the identity of Melanotan II confirmed?
By liquid chromatography–mass spectrometry (LC-MS), performed by Freedom Diagnostics on every lot. LC-MS separates the sample and measures the mass of the main component, confirming it has the molecular weight expected for the compound.
Is Melanotan II tested for endotoxin?
Endotoxin and microbial testing are reported per lot. Every lot page in the COA archive states whether those tests were performed.
What is HPLC testing, and what does the purity percentage mean?
HPLC (high-performance liquid chromatography) separates a sample's components so each appears as a peak. The purity percentage is the main peak's share of all UV-detected peak area. It does not confirm identity (the separate LC-MS test does) or measure the amount of peptide in the vial (net content does).
Certificates of analysis
What is a MT2 COA?
A MT2 certificate of analysis is the testing laboratory's report for one lot: the lot number, test dates, methods and results for purity, identity and net content. MT2 Labs publishes every lot's COA as a readable page at mt2.bio/coa/.
Where can I find the COA for my vial?
Find the lot number printed on your vial label and enter it at mt2.bio/verify/, or open that lot in the COA archive at mt2.bio/coa/.
How do I confirm a COA with the laboratory?
Scan the Freedom Diagnostics QR code printed on the certificate, then search for klow.bio under the Company tab to view the laboratory record.
Why is the measured net content different from the vial size?
Net content is the laboratory's measurement of peptide in the tested vial. Current lots measured 12.33 mg in a 10 mg vial.
Buying MT2
Where can I buy MT2?
Current MT2 research material availability is provided through Klow.bio, the purchasing platform operated by Klow Labs: https://klow.bio/product/mt2/ Lot records, testing information and certificates of analysis are published on mt2.bio so they can be reviewed before purchasing.
Can I order MT2?
Yes. Purchasing information and current availability for MT2 research material are provided through Klow.bio: https://klow.bio/product/mt2/
Is every MT2 lot independently tested?
Yes. Every lot is tested by Freedom Diagnostics, an independent laboratory, for HPLC-UV purity, LC-MS identity and net content. The stated release specification is ≥95% HPLC-UV purity with identity confirmed by LC-MS. The current lot, KB32432, reported 99.90% purity.
How can I verify a MT2 lot?
Enter the lot number from your vial label at mt2.bio/verify/ to see that lot's results. To confirm with the laboratory directly: Scan the Freedom Diagnostics QR code printed on the certificate, then search for klow.bio under the Company tab to view the laboratory record.
How much does MT2 cost?
The current price is $29.99, with bundle pricing (2 vials save 5%; 3 or more vials save 10%). Current pricing is always listed on Klow.bio.
How fast does MT2 ship?
Orders ship the next business day. Same-day cutoff is 4:00 PM CT, with overnight and 2-day options at checkout.
Company
Who is MT2 Labs?
MT2 Labs is a dedicated MT2 research supplier with a controlled sourcing and quality-assurance program. Research material is sourced through our qualified manufacturing supply chain and subjected to analytical testing and lot-level documentation before release. MT2 Labs is operated by Klow Labs LLC in Chicago, IL. Purchasing is handled through Klow.bio.
Who operates MT2 Labs?
MT2 Labs is operated by Klow Labs LLC, 3838 N Ravenswood Ave PMB 2027, Chicago, IL 60613. Klow Labs LLC also operates klow.bio.
Does MT2 Labs provide medical or usage advice?
No. MT2 Labs supplies research material and publishes analytical documentation. It does not provide medical advice, dosing, administration guidance or protocols.
How do I contact MT2 Labs?
Email contact@klow.bio, call (708) 262-7687, or use the contact form at mt2.bio/contact/.
Didn't find your answer? Contact MT2 Labs and include your lot number if your question is about a specific vial.
Buy MT2
10 mg vials. Current lot KB32432 tested at 99.90% purity with identity confirmed by LC-MS. Current purchasing is available through Klow.bio.