What is the molecular weight of ipamorelin?
The molecular weight of Ipamorelin is 711.9 g/mol on the registry record used for identity. The molecular formula is C38H49N9O5. CAS Registry Number 170851-70-4. PubChem CID 9831659. It is classed as a peptide. Synonyms include NNC 26-0161. Laboratories use this mass when confirming identity by mass spectrometry.
Mass. The expected average mass for identity confirmation is 711.9 g/mol.
Formula. C38H49N9O5.
Analytical note. Sable's release specification is ≥99% by HPLC with identity confirmed against the expected mass (quality page). Research use only. Not a medicine. Not for human or veterinary use.
Sources
Ipamorelin: reference facts
8 Ipamorelin values, each linked to its public source; see the Ipamorelin reference page.
| Synonyms | NNC 26-0161 (pubchem.ncbi.nlm.nih.gov) |
|---|---|
| Compound class | peptide (pubchem.ncbi.nlm.nih.gov) |
| CAS Registry Number | 170851-70-4 (pubchem.ncbi.nlm.nih.gov) |
| Sequence | Aib-His-D-2Nal-D-Phe-Lys-NH2 (pubchem.ncbi.nlm.nih.gov) |
| Molecular formula | C38H49N9O5 (pubchem.ncbi.nlm.nih.gov) |
| Molecular weight | 711.9 g/mol (pubchem.ncbi.nlm.nih.gov) |
| PubChem CID | 9831659 (pubchem.ncbi.nlm.nih.gov) |
| Storage (lyophilised) | -20 °C, dry, protected from light (sigmaaldrich.com) |
Sizes and prices at Sable
| Vial | Price | Per mg | UK same-size check (2026-10-16) |
|---|---|---|---|
| 2 mg | £7.96 | £3.98 | lowest other £9.50 across 2 UK sellers |
| 5 mg | £14.97 | £2.99 | lowest other £14.99 across 11 UK sellers |
| 10 mg | £8.94 | £0.89 | lowest other £24.99 across 10 UK sellers |
Multi-vial pricing on the same item: 3+ vials 10% off, 5+ vials 15% off, 10+ vials 20% off. Every lot has a certificate of analysis: CoA library.
Typical analytical method
| HPLC column | C18 reversed-phase (100-120 A pore) |
|---|---|
| Mobile phase | A: water + 0.1% TFA; B: acetonitrile + 0.1% TFA; linear gradient (e.g. 5-65% B over 20-30 min) |
| Detection | 214-220 nm (peptide bond) |
General literature method. The lot CoA records the method actually used. How to read an HPLC chromatogram.
Related questions
Lyophilised storage on file: Ipamorelin
From the Sable storage reference (lyophilised material only; temperature, light, moisture). Literature basis is linked per row. See peptide storage.
| Compound | Lyophilised storage | Light / notes |
|---|---|---|
| Ipamorelin | -20 C long term (-80 C acceptable), sealed and desiccated; 2-8 C for weeks | protect from light; no specific sequence liabilities identified from sequence data on file (source) |
Typical analytical method: Ipamorelin
Reference HPLC and MS conditions from the Sable analytical-methods file; a lot's CoA states the method actually used. See how to read a CoA.
| Compound | HPLC column / detection | MS / expected ion |
|---|---|---|
| Ipamorelin | C18 reversed-phase (100-120 A pore); 214-220 nm (peptide bond) | ESI-MS (positive mode); LC-MS for identity; [M+1H]1+ ~712.9; [M+2H]2+ ~357.0; [M+3H]3+ ~238.3 |
Research use only. Not a medicine. Not for human or veterinary use.