VLT-TIR
A synthetic peptide in Vaelith's house series. Structure, handling, and lot testing.
VLT-TIR is Vaelith's listing for the synthetic peptide published in the literature as tirzepatide. It is supplied as a lyophilized (freeze-dried) powder for laboratory research, and this page is a reference for what the material is, how it is stored, and how each production lot is tested before it ships. It is not medical guidance and is not intended for human use.
Identity and structure
VLT-TIR is a synthetic, modified peptide sequence of 39 amino acids: a single chain carrying chemical modifications along the sequence, including an acylated side chain. Its molecular formula is C225H348N48O68 and its approximate molecular weight is 4813 g/mol. The compound appears in the published research literature under its literature name; the notes on this page are limited to physical description, storage, and testing. It is supplied strictly as a research material.
The interactive model above is a computed conformation generated from the published structure. It is a visual aid for orientation in the sequence, not a measured structure.
Handling and storage
VLT-TIR ships as a lyophilized powder in a sealed vial. As a research material it is stored cool, dark, and dry, with the vial kept sealed until it is needed for laboratory work. Laboratories follow their own institutional handling and stability protocols. Vaelith does not provide preparation or use instructions of any kind.
How Vaelith tests each lot
Every production lot of VLT-TIR is tested before it is listed. Identity is confirmed by mass spectrometry, purity is measured by HPLC, and net content is checked against the label. Lots are not tested for endotoxin, heavy metals, or sterility, and the certificate says so plainly rather than leaving the field blank.
- Identity: mass spectrometry, observed mass compared with the expected mass.
- Purity: HPLC, reported as a percentage with the method noted.
- Net content: measured against the labeled amount.
- Not tested: endotoxin, heavy metals, sterility.
Results are recorded in a lot passport that you can open at any time by entering the lot number on the verification page (the address takes the form /verify.html?lot=...). Each certificate also carries a fingerprint, so the document you are reading can be matched to the one on file.
Reading the certificate
A certificate lists the compound and lot number, the identity result with the observed mass, the purity figure from HPLC, the net content, and the tests that were not performed. If any of those fields is missing, or the fingerprint on the certificate does not match the lot passport, treat the certificate as unverified and contact us before relying on it.
Frequently asked
What is VLT-TIR?
VLT-TIR is a synthetic peptide in Vaelith's house series, supplied lyophilized as a laboratory research material.
Is it approved for use?
No. It is offered as a research chemical and is not approved for human or veterinary use.
Does this page describe what VLT-TIR does?
No. This page covers identity, structure, storage, and lot testing only. The compound appears in the published research literature, and researchers consult that literature directly.
How do I confirm a lot is genuine?
Every lot has a certificate and a lot passport. Enter the lot number on the verification page to see its identity, purity, and net-content results and the certificate fingerprint. Certificates are also collected on the COA page, and the compound is listed in the store.