Ara-290
Ara-290 from the Nexus Specialty Research catalog, supplied for controlled in-vitro research workflows.
In stock: 10mg is in stock.
For in-vitro research use only. Not for human consumption.
ARA290 (Cibinetide) is an 11-amino acid peptide derived from the helix B surface of erythropoietin (EPO). In research contexts, it selectively activates the Innate Repair Receptor (IRR), a heteromer of EPO receptor and CD131 (β-common receptor), without stimulating erythropoiesis. This receptor selectivity supports laboratory studies of tissue-protective signaling independent of red blood cell production.
Ara-290 definition
ARA-290 (cibinetide) is an 11-amino-acid synthetic peptide derived from the helix-B surface of erythropoietin. Research models have examined its interaction with the innate-repair receptor (IRR; CD131 / β-common subunit) without engaging classical erythropoietin receptors. The compound is studied in preclinical tissue-protection research without erythropoiesis side effects characteristic of EPO. Research use only. Independently verified Nexus lots publish a Certificate of Analysis documenting HPLC purity, mass spectrometry identity, and endotoxin screening; pending lots are labeled certificate pending.
No sequence is listed in the current catalog record for this product.
- CAS
- 1208243-50-8
- MW
- 1257.3 g/mol
- Sequence
- Not listed
- Half-life
- Not listed
- Formula
- Not listed
- Purity
- Not listed
- Form
- Not listed
- Class
- Specialty Research
This lyophilized research material is commonly paired with bacteriostatic water for reconstitution workflows.
Add bacteriostatic waterThe dossier.
Compound Overview
ARA290 (Cibinetide) is an 11-amino acid peptide derived from the helix B surface of erythropoietin (EPO). In research contexts, it selectively activates the Innate Repair Receptor (IRR), a heteromer of EPO receptor and CD131 (β-common receptor), without stimulating erythropoiesis. This receptor selectivity supports laboratory studies of tissue-protective signaling independent of red blood cell production.
Research Background & Published Literature
ARA290 has been discussed in Molecular Medicine and other journals, with published research covering neuroprotection, metabolic neuropathy, and anti-inflammatory signaling models. Clinical-trial literature has also investigated the compound in sarcoidosis and diabetic neuropathy contexts; Nexus supplies this catalog item only as an in-vitro research reagent and not for diagnostic, therapeutic, human, or veterinary use.
Researchers reviewing the literature around this compound can use the peer-reviewed resources below for additional context on mechanism of action, signaling pathways, and controlled laboratory research applications:
- Brines et al. (2015) — Mol Med
- van Velzen et al. (2014) — Expert Opin Investig Drugs
- Zhang et al. (2016) — Peptides
Storage, Handling & Stability Guidelines
Store lyophilized ARA290 at -20°C for long-term stability. After reconstitution with sterile diluent, maintain material at 2–8°C and limit freeze-thaw exposure by aliquoting working volumes according to standard operating procedures.
- Keep ambient-temperature handling time as short as practical to support compound integrity.
- Reseal vials promptly after each withdrawal to reduce moisture exposure.
- Use appropriate personal protective equipment and follow institutional chemical safety protocols at all times.
- For traceability, label all aliquots with compound name, concentration, reconstitution date, and operator initials.
Lab Verification
Nexus maintains batch-level verification records for research compounds in the Lab Verified archive, including HPLC purity review and Mass Spectrometry identity confirmation where current lot data is available.
Shipping
Orders ship within the United States via USPS; international orders are not accepted. Compounds are supplied as lyophilized research material — follow the storage and reconstitution guidance on the product page and its Certificate of Analysis.
Compound details.
- CAS Number
- 1208243-50-8
- Molecular Weight
- 1257.4 g/mol
- Class
- EPO-derived peptide (helix-B surface)
- Sequence length
- 11 residues
- Receptor target (research)
- Innate-repair receptor (CD131-containing complex)
Research context.
Studied in preclinical research models examining innate-repair receptor signaling, tissue-protection pathway research, and neuropathic / inflammatory model research. This context is limited to controlled research workflows.
Verification standard.
Independently verified Nexus Laboratory batches ship with a Certificate of Analysis documenting HPLC purity (target ≥98%), mass spectrometry identity (expected versus observed mass), and endotoxin context where applicable — verified by independent third-party laboratories and publicly archived; lots awaiting final documentation are labeled certificate pending instead of showing assay values. Review Nexus lab verification.
HPLC trace.
- HPLC purity
- See COA
- Retention time
- See COA
- Batch
- NEX-ARA-290-2026-0009
The full reverse-phase HPLC chromatogram, peak integration table, and mass-spectrometry identity confirmation for this batch are published on the certificate of analysis.
View certificate of analysis - batch NEX-ARA-290-2026-0009- Sequence
- Not listed
- Model preview
- Unavailable
Molecular model preview is unavailable for this catalog record.
The chemistry.
Static molecular fallback shown because this catalog record does not include a sequence suitable for the amino-acid viewer.
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Ara-290 research FAQ.
What is Ara-290 used for in research?
Ara-290 is supplied for controlled in-vitro research workflows in the Specialty Research category. It is not labeled for human or veterinary use.
Is Ara-290 HPLC verified?
Ara-290 has a finalized Nexus Lab Verified record with batch-specific HPLC purity context in the current COA data.
Which Ara-290 sizes are available?
Current Nexus variants include 10mg.
Does Ara-290 include a COA?
Yes. The current Nexus record links Ara-290 to verified batch NEX-ARA-290-2026-0009.
