Tirzepatide 20mg / 40mg
For In Vitro Use Only — Not for Human Use
Dual GIP / GLP-1 receptor agonist — 20mg and 40mg lyophilised vials at ≥98% purity, prepared for in vitro incretin research.
- Peptide Type
- Dual receptor agonist (GIP / GLP-1)
- Sequence length
- 39 amino acids
- Molecular weight
- ≈4,813 Da
- Form
- Lyophilised powder
- Quantity
- 20mg or 40mg per vial
- Purity
- ≥98% by RP-HPLC + MS
- Solubility
- Water / bacteriostatic water
- CAS
- 2023788-19-2
Product Overview
Tirzepatide is a 39-amino-acid dual agonist that binds both the GIP and GLP-1 receptors from a single peptide backbone, with a C20 fatty-diacid moiety that extends its half-life in solution. Supplied as a sterile lyophilised powder in 20mg and 40mg vials, verified to ≥98% purity by RP-HPLC and confirmed by mass spectrometry.
Research Overview
In vitro, Tirzepatide is used to characterise co-activation of the GIP and GLP-1 receptors — including cAMP accumulation, β-arrestin recruitment and receptor-bias studies. It is often used as a comparator peptide when characterising newer molecules such as Retatrutide or Cagrilintide combinations.
Handling & Use
Reconstitute with bacteriostatic water in a sterile environment. The C20 fatty-diacid modification gives good stability in solution; prepare working aliquots to minimise repeated freeze-thaw cycles.
Storage Guidelines
- Lyophilised vials: store below -18°C, protected from light.
- Reconstituted solution: refrigerate at 2–8°C and use within 30 days.
- Avoid repeated freeze-thaw cycles to preserve peptide integrity.
- Strictly for laboratory research use only.
- Not for human or veterinary use.
- Not intended to diagnose, treat, cure, or prevent any condition.
Frequently asked questions
How is Tirzepatide different from Semaglutide?+
Semaglutide is a single-receptor GLP-1 analogue; Tirzepatide activates both the GLP-1 and GIP receptors from one 39-residue peptide, which is the main variable researchers compare in incretin studies.
What is the reported half-life of Tirzepatide?+
Published pharmacokinetic data reports a half-life of approximately 5 days (~120 hours), enabled by the C20 fatty-diacid modification that binds albumin. This supports once-weekly administration in research protocols.
What purity is your Tirzepatide?+
Every vial is tested to ≥98% purity by RP-HPLC and confirmed by mass spectrometry (~4,813 Da). A batch-specific Certificate of Analysis is published on our COA page.
20mg vs 40mg — is there any difference in the peptide?+
No — both vials contain the same peptide at the same purity. The 40mg vial simply gives more working volume per reconstitution and lower cost per mg.
How is Tirzepatide reconstituted?+
Reconstitute with bacteriostatic water in a sterile laboratory environment. For target concentrations and volumes, use our peptide calculator.
How long is reconstituted Tirzepatide stable?+
Kept refrigerated at 2–8°C and protected from light, reconstituted Tirzepatide remains suitable for in vitro research use for up to ~30 days. Avoid repeated freeze-thaw cycles.
Do you ship Tirzepatide from the UK?+
Yes — all Tirzepatide vials are UK-stocked with next-working-day dispatch on orders placed before 2pm.
Do you supply a Certificate of Analysis?+
Yes — a third-party HPLC + MS COA is linked from the product page for every batch.
