Retatrutide
10 mg vial
- Standard
- Royal Mail Tracked 48, free on every order
- Express
- Royal Mail Tracked 24, for a fee at checkout
- Returns
- Unopened items within 14 days. Not accepted once a seal is broken
- Problems
- Lost, damaged or wrong item? Contact us and we'll replace it or refund you
- Vial
- One sealed glass vial containing 10 mg of lyophilised powder.
- Label
- Batch number, quantity, storage conditions and “For research use only. Not for human or veterinary use.”
- Packing
- A sealed bag inside plain outer packaging.
- Shipping
- At room temperature. On arrival: store at -20 °C, sealed and protected from light.
- Why does the vial look almost empty?
- Peptides are supplied as a lyophilised (freeze-dried) powder. A few milligrams forms a thin film or small cake at the bottom of the vial, and its appearance can vary between lots. The quantity on the label is the mass of peptide in the vial.
- How can I pay?
- By bank transfer through Open Banking. Choose your bank at checkout and approve the payment in your banking app; you don't enter card or account details on our site. We don't take card payments at the moment.
- Can you advise on how to use a product?
- No. We describe our products by their chemistry and can't advise on applications or use. We're happy to help with orders, delivery and documentation. Contact us
Something else? Get in touch
How every batch is checked
A batch is one run of a product, made and tested together. Here's what every batch has to pass before we sell it.
Purity: at least 98%
A batch has to be at least 98% pure, or we don't sell it. Janoshik, an independent lab, checks with a test called HPLC, which shows how much of the peptide is the right molecule rather than broken or incomplete copies.
A certificate for every batch
The lab's results go in a certificate of analysis. Open the current batch's from the top of this page, or scan the QR code on your vial's label.
Kept in the freezer
Freeze-dried peptides keep longest cold. Stock stays sealed at −20 °C, away from light, until your order is packed.
From order to your door
What happens after you order, with the dates for an order placed now.
Order and pay by bank
No card needed. Choose your bank at checkout and approve the payment in your banking app, so no card details are entered on our site.
Dispatched the same day
Order by 1pm on a working day and we dispatch it that day, in plain packaging. Later orders go out the next working day.
Arrives in two to three working days
Free Royal Mail Tracked 48, two to three working days after dispatch. Need it sooner? Tracked 24 is £3.95 at checkout.
Technical data
About Retatrutide
Retatrutide, development code LY3437943, is a synthetic peptide of 39 amino acids with an amide (-NH2) at the end of the chain. Its molecular formula is C221H342N46O68 and its molecular weight is 4731.3. Three of its building blocks are not found in natural proteins. Positions 2 and 20 are α-aminoisobutyric acid (Aib), which carries two methyl groups where most amino acids have one hydrogen. Position 13 is α-methyl-leucine, a leucine with an extra methyl group. Both make the chain stiffer and harder for enzymes to cut. The lysine at position 17 carries a side chain attached to its amine group. The side chain has three parts, joined in a row: a short linker called AEEA (a small amino acid with a two-unit ethylene glycol spacer), a γ-glutamic acid, and eicosanedioic acid, a 20-carbon chain with an acid group at each end. The side chain adds about 600 to the molecule's weight, so check the mass on the certificate of analysis against the full structure, not just the amino acid chain. Supplied as a freeze-dried (lyophilised) powder in a sealed glass vial. For laboratory research use only. Not for human or veterinary use.
Chemistry
- Sequence
- Tyr-Aib-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Ile-αMeLeu-Leu-Asp-Lys-Lys(eicosanedioyl-γGlu-AEEA)-Ala-Gln-Aib-Ala-Phe-Ile-Glu-Tyr-Leu-Leu-Glu-Gly-Gly-Pro-Ser-Ser-Gly-Ala-Pro-Pro-Pro-Ser-NH2
- Molecular formula
- C221H342N46O68
- Molecular weight
- 4731.3 g/molWork out a stock concentration
- Monoisotopic mass
- 4728.4718 Da
Identifiers
- Synonyms
- LY3437943
- CAS number
- 2381089-83-2
- PubChem CID
- InChIKey
- MLOLQJNKXBNWFW-SAGGEDDASA-N
In the vial
- Amount
- 10 mg per vial
- Form
- Lyophilised powder
- Storage
- Store at -20 °C, sealed and protected from light
Documents
- Certificate of analysisNot published yet
- Spec sheetPlain text
- Safety data sheetOn request
