EPO-derived 11-AA tissue-protective peptide
An 11-amino-acid synthetic peptide derived from the helix B surface of erythropoietin (EPO). Engineered to bind the EPOR/CD131 heteromer without haematopoietic activity.
| Compound | ARA290 |
| Research category | Regenerative Research |
| Available sizes | 10mg, 20mg, 30mg |
| Pricing | From £39 |
| Format | Lyophilised powder in sealed vial |
| Purity | >99% by HPLC (Janoshik Analytical, batch-verified) |
| Intended use | In-vitro laboratory research only. Not for human consumption. |
Reference data drawn from public databases (PubChem, UniProt) and peer-reviewed literature. For research and laboratory characterisation only.
| Compound class | Synthetic 11-amino-acid linear peptide derived from EPO helix B (Cibinetide) |
| Molecular formula | C51H82N16O20 |
| Molecular weight | 1257.4 g/mol |
| CAS Registry Number | 1239358-86-1 |
| Number of residues | 11 |
| Amino acid sequence | QEQLERALNSS |
| Receptor / mechanism | Innate Repair Receptor (EPO-βcR heteromer) agonist; non-erythropoietic. |
| Reported half-life | Reported ~2 minutes in human serum (very short). |
| Solubility | Lyophilised powder reconstitutes in bacteriostatic water for laboratory use. |
| Storage (lyophilised) | Stable at 2–8 °C lyophilised for 24+ months. |
| Storage (reconstituted) | Reconstituted: store at 2–8 °C, use within 14 days. |
| Clinical / regulatory status | Phase 2 in published research. |
ARA290 (Cibinetide) is a synthetic 11-amino-acid peptide derived from the B-helix of erythropoietin. Characterised in the literature for its binding to the innate repair receptor complex (EPOR/βcR) without haematopoietic activity. Supplied as lyophilised powder for in-vitro research use only.
The above describes how this compound is characterised in the published peer-reviewed literature. It is not a claim about effects in humans.
ARA290 is supplied as a lyophilised (freeze-dried) powder in a sealed glass vial. For laboratory reconstitution, add the desired volume of diluent (typically bacteriostatic water) slowly down the side wall of the vial. Swirl gently until fully dissolved - do not vortex or shake. Store reconstituted solutions at 2–8 °C and use within 4–6 weeks.
Use our Reconstitution Volume Calculator to compute the resulting mg/ml concentration.
| State | Temperature | Shelf life |
|---|---|---|
| Lyophilised | 2–8 °C or −20 °C | Up to 24 months |
| Reconstituted | 2–8 °C | 4–6 weeks typical |
Every batch of ARA290 we supply is independently HPLC-verified by Janoshik Analytical. Where a Janoshik report has been issued for the current batch it is supplied with the order and carries a unique verification key that can be authenticated against Janoshik's records. Reported purity is consistently above 99%.
Latest Janoshik report for ARA-290 10mg · task #237376 · analysed 28 Sep 2026
This report is for the batch, not the size. Janoshik’s HPLC test measures what the compound is and how pure it is, and its quantification confirms the amount in the vial tested. Every size of ARA-290 is filled from the same tested batch, so this 10mg report covers 20mg and 30mg as well. The report supplied with your order carries a verification key you can check on Janoshik’s own site.
| Purity | 99.000% |
| Measured content | 11.22 mg |
| Batch | L77ara2901226 |
| Verification key | 6RCBZADYIQHB |
Chemical and reference data for ARA290 is drawn from public chemical registries (CAS, PubChem) and the independent peer-reviewed literature. All sources are third-party and independently verifiable; Lab77 Peptides is not affiliated with the cited publications or databases.