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About this material
Tirzepatide is a synthetic 39-amino-acid linear peptide (molecular formula C225H348N48O68), chemically modified with a C20 fatty diacid moiety, supplied as a lyophilized powder.
Specifications
- Form
- Lyophilized powder
- Appearance
- White to off-white lyophilized powder
- Purity / assay
- 99.98% (HPLC / MS)
- Molecular formula
- C225H348N48O68
- Molecular weight
- 4813 Da
- CAS number
- 2023788-19-2
- Also known as
- LY3298176, LY-3298176, tirzepatidum, tirzepatida
- Test methods
- HPLC · MS · LAL
- Reconstitution
- In a suitable sterile solvent, per your protocol
- Presentation
- Sealed single research vial
- Storage
- Store lyophilized at -20°C; follow your laboratory’s own protocol.
- Current lot
- TRZ-2406A
Certificate of Analysis
Tirzepatide, third-party tested, per lot
LotTRZ-2406A
Sample certificate. This is a representative placeholder. The signed Certificate of Analysis for this lot is issued by our research laboratory and will replace this record.
Assay purity · this lot
Illustrative99.98%
Representative trend, illustrative, not measured lot data
Result vs specification
97%Spec >= 98.0% · result 99.98%100%
- Testing lab
- Virberg
- Accreditation
- Pending
- Manufactured
- March 3, 2026
- Released
- March 21, 2026
- Retest by
- March 21, 2028
- Storage
- Store lyophilized at -20°C; follow your laboratory’s own protocol.
Purity by RP-HPLC · chromatogram
IllustrativeRetention time →Representative trace · not measured data
| Test | Method | Specification | Result |
|---|---|---|---|
| Appearance | Visual | Conforms to description | White to off-white lyophilized powder |
| Identity | Mass Spectrometry | Conforms to reference | Conforms |
| Purity | RP-HPLC | ≥ 98.0% | 99.98% |
| Molecular Mass | ESI-MS | Conforms to theoretical | Conforms |
| Water Content | Karl Fischer | ≤ 6.0% | 3.8% |
| Endotoxin | LAL (kinetic) | < 0.5 EU/mg | Pass (< 0.1 EU/mg) |
Appearance
- Method
- Visual
- Spec
- Conforms to description
- Result
- White to off-white lyophilized powder
Identity
- Method
- Mass Spectrometry
- Spec
- Conforms to reference
- Result
- Conforms
Purity
- Method
- RP-HPLC
- Spec
- ≥ 98.0%
- Result
- 99.98%
Molecular Mass
- Method
- ESI-MS
- Spec
- Conforms to theoretical
- Result
- Conforms
Water Content
- Method
- Karl Fischer
- Spec
- ≤ 6.0%
- Result
- 3.8%
Endotoxin
- Method
- LAL (kinetic)
- Spec
- < 0.5 EU/mg
- Result
- Pass (< 0.1 EU/mg)
Each lot is tested by an independent third-party laboratory. Results above correspond to lot TRZ-2406A.
Download COA (PDF)Handling & storage
Supplied as a lyophilized powder. Reconstitute in sterile water or another solvent appropriate to your own protocol; gentle swirling rather than vigorous shaking is generally preferred for peptides. Store the lyophilized powder at -20C and protect from moisture and light; prepare working stocks fresh and store any reconstituted solution per your laboratory's established procedures, avoiding repeated freeze-thaw cycles. Any downstream handling is performed by the buyer according to their own laboratory protocol and applicable safety practice.
Documentation & traceability
Per-lot Certificate of Analysis
The COA for this lot is published on this page, no email gate.
Lot number matches the certificate
When you receive an order, the lot printed on the vial will match the COA published here.
Independently verified
Identity, purity, mass, and endotoxin are tested by a third-party laboratory.
Tracked, protected shipping
Ships discreetly with tracking, cold-packed where the compound requires it.
- Third-party lab tested
- Per-lot COA
- Identity + purity verified
- Research-use attested
- Discreet shipping
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