Melanotan I frequently asked questions
Answers about Melanotan I, how it is tested, how to read and verify its certificates, ordering, and MT1 Peptide Co.. Figures update automatically from the current lot data.
Last updated
Product
What is Melanotan I?
Melanotan I is a synthetic linear α-MSH analog (13 residues) designed for activity at the melanocortin 1 receptor (MC1R). MT1 Peptide Co. supplies it as a lyophilized powder in 10 mg vials, with an independent certificate of analysis for every lot.
What is MT1 research material?
MT1 research material is Melanotan I 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 "MT1" mean?
MT1 is a linear peptide and a different compound from Melanotan II (MT2), which is a shorter, cyclic analog. The two have different formulas and molecular weights (1646.85 vs 1024.18 g/mol).
What is the molecular formula and weight of Melanotan I?
The molecular formula is C78H111N21O19 and the average molecular weight is 1646.85 g/mol. The peptide has 13 residues.
How should Melanotan I 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 MT1 peptide the same as Melanotan I?
Yes. MT1 is the common abbreviation for Melanotan I, [Nle4, D-Phe7]-α-MSH.
Why does MT1 contain norleucine?
Norleucine replaces methionine at position 4. It has a similar shape but no sulfur, so it does not oxidize.
Testing and quality
How is MT1 analyzed?
Melanotan I is analyzed with complementary methods: HPLC-UV for purity, HPLC-RTM for identity, a quantitative measurement for net content, and, where listed, LAL endotoxin and PCR microbial testing. Results are published per lot at mt1peptide.bio/coa/.
Who tests Melanotan I?
Every lot is tested by ILS Laboratories, an independent third-party analytical laboratory. MT1 Peptide Co. does not test its own material for published certificates.
What purity does Melanotan I test at?
Current lots report HPLC-UV purity 97.55%, against a stated release specification of ≥95%. The most recent result is 97.55% for lot KB-34289.
How is the identity of Melanotan I confirmed?
By HPLC retention-time comparison with a reference standard (HPLC-RTM), performed by ILS Laboratories on every lot. The laboratory runs the sample and a reference standard of the named compound under the same HPLC conditions; identity is confirmed when the main peak elutes at the reference standard’s retention time.
Is Melanotan I 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 HPLC-RTM test does) or measure the amount of peptide in the vial (net content does).
Certificates of analysis
What is a MT1 COA?
A MT1 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. MT1 Peptide Co. publishes every lot's COA as a readable page at mt1peptide.bio/coa/.
Where can I find the COA for my vial?
Find the lot number printed on your vial label and enter it at mt1peptide.bio/verify/, or open that lot in the COA archive at mt1peptide.bio/coa/.
How do I confirm a COA with the laboratory?
Go to portal.ils-lab.com (or scan the QR code on the certificate) and enter the lot's verification access code, listed on its lot page, to view the laboratory's own copy of the certificate.
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 10.13 mg in a 10 mg vial.
Buying MT1
Where can I buy MT1?
Current MT1 research material availability is provided through Klow.bio, the purchasing platform operated by Klow Labs: https://klow.bio/product/mt1/ Lot records, testing information and certificates of analysis are published on mt1peptide.bio so they can be reviewed before purchasing.
Can I order MT1?
Yes. Purchasing information and current availability for MT1 research material are provided through Klow.bio: https://klow.bio/product/mt1/
Is every MT1 lot independently tested?
Yes. Every lot is tested by ILS Laboratories, an independent laboratory, for HPLC-UV purity, HPLC-RTM identity and net content. The stated release specification is ≥95% HPLC-UV purity with identity confirmed by HPLC retention-time match against a reference standard. The current lot, KB-34289, reported 97.55% purity.
How can I verify a MT1 lot?
Enter the lot number from your vial label at mt1peptide.bio/verify/ to see that lot's results. To confirm with the laboratory directly: Go to portal.ils-lab.com (or scan the QR code on the certificate) and enter the lot's verification access code, listed on its lot page, to view the laboratory's own copy of the certificate.
How much does MT1 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 MT1 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 MT1 Peptide Co.?
MT1 Peptide Co. explains the MT1 peptide (Melanotan I) and publishes the independent laboratory result for every lot sold through Klow.bio. MT1 Peptide Co. is operated by Klow Labs LLC in Chicago, IL. Purchasing is handled through Klow.bio.
Who operates MT1 Peptide Co.?
MT1 Peptide Co. is operated by Klow Labs LLC, 3838 N Ravenswood Ave PMB 2027, Chicago, IL 60613. Klow Labs LLC also operates klow.bio.
Does MT1 Peptide Co. provide medical or usage advice?
No. MT1 Peptide Co. supplies research material and publishes analytical documentation. It does not provide medical advice, dosing, administration guidance or protocols.
How do I contact MT1 Peptide Co.?
Email contact@klow.bio, call (708) 262-7687, or use the contact form at mt1peptide.bio/contact/.
Didn't find your answer? Contact MT1 Peptide Co. and include your lot number if your question is about a specific vial.
Buy MT1
10 mg vials. Current lot KB-34289 tested at 97.55% purity with identity confirmed by HPLC retention-time match against a reference standard. Current purchasing is available through Klow.bio.