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Tesamorelin — Research Peptide

Tesamorelin at a glance

Peptide.Express Tesamorelin (CAS 218949-48-5) starts at $50, ≥99% pure by HPLC, with a molecular weight of 5135.9 Da and molecular formula C221H366N72O67S, third-party tested with a lot-matched Certificate of Analysis you can verify before purchase. Ships same day on US orders placed before 2 PM EST, free over $150. For in-vitro laboratory research use only.

Tesamorelin — research-grade lyophilized peptide vial from Peptide.Express, ≥99% HPLC purity
≥99% PurityUS SynthesizedIn Stock

For laboratory research use only. Not for human or veterinary use.

Research-Grade Compound

Tesamorelin is a synthetic analog of growth hormone-releasing hormone (GHRH), built on the full 44-amino-acid GHRH sequence and stabilized by a trans-3-hexenoyl modification at the N-terminus. Molecular formula C221H366N72O67S, molecular weight 5,135.9 Da, CAS 218949-48-5. It is also catalogued as TH9507.

Purity standard: Tesamorelin is sourced to ≥99% by HPLC — sourcing spec.

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5mg · $50.00/vial

$50.00$60.00USD / Unit
1

Certificate of Analysis

Showing CoA for 5mg.

View CoAVerify with testing laboratory
HPLC VerifiedIdentity & purity
CoA Every OrderLot-matched
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Tesamorelin complete research guide →

In-depth research overview, mechanism of action, and study applications.

Showing CoA for 5mg
Certificate Details
Purity≥99%
Methodology
HPLCLC-MS/MS
CAS Number218949-48-5
Molecular FormulaC221H366N72O67S
Molecular Weight5135.9 g/mol
SequenceStabilized 44-amino-acid GHRH analog (trans-3-hexenoyl-modified)
Verify Results with Testing Laboratory

Issued by an independent third-party laboratory; Peptide.Express does not test in-house. Results are reproduced as-is and confirm compound identity, purity, and the analytical methods used. For questions about specific results, contact support@peptide.express.

Safety Data Sheet (SDS)
≥99% by HPLCLC-MS/MS VerifiedCoA Every BatchIn-Vitro Research Use Only

Tesamorelin Specifications

Identity, purity and storage specifications for Tesamorelin.
CompoundTesamorelin
CAS218949-48-5
Molecular formulaC221H366N72O67S
Molecular weight5,135.9 Da
SequenceStabilized 44-amino-acid GHRH analog (trans-3-hexenoyl-modified)
Purity≥99% by HPLC
FormLyophilized powder
Storage (lyophilized)-20°C, desiccated, protected from light
Storage (reconstituted)2–8°C, use within 14–28 days

Reconstituting Tesamorelin: step-by-step peptide reconstitution guide. Concentration maths: peptide reconstitution calculator.

Buying Tesamorelin — Frequently Asked Questions

What purity standard does Peptide.Express use for tesamorelin?

≥99% by reverse-phase HPLC, with LC-MS/MS confirming the 5,135.9 Da molecular weight. Mass confirmation matters more than usual for a peptide of this size, because truncation products from incomplete synthesis are the most common contaminant in long sequences and they can be difficult to resolve chromatographically.

Where is the Certificate of Analysis for tesamorelin?

On this page and in the Peptide.Express lab results library. Each CoA is batch-specific and lists the HPLC chromatogram and purity figure, LC-MS/MS mass confirmation, endotoxin result, testing laboratory and test date. The batch number printed on the vial label maps to a specific CoA.

What testing does tesamorelin undergo before shipping?

Reverse-phase HPLC for purity by area-under-curve, LC-MS/MS for molecular weight identity, LAL endotoxin testing, and visual QC for appearance and particulate. Testing is performed by an independent third-party laboratory and a batch-specific Certificate of Analysis is issued for each lot.

How should tesamorelin be stored before and after reconstitution?

Lyophilized: -20°C, desiccated, protected from light, stable for 24 months from manufacture. Reconstituted: 2–8°C, used within 14–28 days. Do not freeze the reconstituted solution — freeze-thaw cycling drives aggregation in peptides of this size faster than it does in short sequences.

Is tesamorelin FDA approved?

Yes, as the drug product Egrifta, for the reduction of excess visceral abdominal fat in HIV-infected patients with lipodystrophy. That approval covers a manufactured pharmaceutical for a specific indication in a specific population — it does not extend to research-grade tesamorelin, and the material Peptide.Express supplies is sold strictly for in-vitro laboratory research.

Tesamorelin research reference

Research Compounds Related to Tesamorelin

CJC-1295 + Ipamorelin (No DAC)The dual-pathway stack pairing a shorter GHRH analog with a ghrelin-receptor agonist.SermorelinThe unmodified GHRH(1-29) fragment — same receptor, no stability engineering.IpamorelinSelective GHSR-1a agonist studied as the parallel-pathway counterpart to GHRH analogs.MOTS-cMitochondrial-derived peptide studied alongside GH secretagogues in metabolic research designs.

All products are sold for in-vitro laboratory research use only. Not intended for human consumption, clinical use, or veterinary use. Peptide.Express makes no medical claims. Consult the published literature for research application guidance.

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