Research peptide
ARA-290
ARA-290, also called cibinetide, is an 11-residue peptide derived from the helix-B surface of erythropoietin. VaultLabs supplies a 10 mg lyophilized vial. It is not erythropoietin, and it is not an approved medicine. Identity follows the PubChem and USAN record: pyroglutamate through Ser-Ser, formula C51H84N16O21, about 1257.3 g/mol, CAS 1208243-50-8.
Research use only. For in vitro research use only. Not for human or animal consumption. Not for human consumption, medical use, or personal application.
Reviewed by VaultLabs Research Editorial Desk · Last updated 2026-10-20
Key facts
- 11 residues. Sequence pGlu-Glu-Gln-Leu-Glu-Arg-Ala-Leu-Asn-Ser-Ser.
- CAS 1208243-50-8. Formula C51H84N16O21. Molecular weight 1257.3 g/mol.
- Not erythropoietin.
- A third-party sheet that prints a different formula is not the record used here.
- Catalogue fill is 10 mg.
- Supplied for laboratory research. Not for human use.
- Chemical name
- Cibinetide (ARA-290)
- Sequence
- pGlu-Glu-Gln-Leu-Glu-Arg-Ala-Leu-Asn-Ser-Ser
- CAS number
- 1208243-50-8
- Molecular formula
- C51H84N16O21
- Molecular weight
- 1257.3 g/mol
- Catalog strength
- 10 mg vial
What ARA-290 is
ARA-290 and cibinetide are the same peptide under two names. The sequence is 11 residues starting with pyroglutamate. Use CAS 1208243-50-8 and formula C51H84N16O21. Do not adopt a vendor formula that adds residues the USAN record does not have, and do not copy a vendor purity or a fill mass such as a five-decimal milligram figure onto this product. Those are not VaultLabs measurements.
ARA-290, also called cibinetide, is an 11-residue peptide derived from the helix-B surface of erythropoietin. VaultLabs supplies a 10 mg lyophilized vial. It is not erythropoietin, and it is not an approved medicine. Identity follows the PubChem and USAN record: pyroglutamate through Ser-Ser, formula C51H84N16O21, about 1257.3 g/mol, CAS 1208243-50-8.
How VaultLabs catalogues it
One fill: ARA-290 10mg. The monograph is /compounds/ara-290. It is not BPC-157. Papers on cibinetide are in-vitro or preclinical context. They are not a release specification for this lot.
Write ARA-290 or cibinetide, 10 mg, and the lot. If the certificate is not public yet, the lab report is available on request and the unit stays in quarantine.
Lots and receiving
Each sealed unit carries its own lot number. The current catalogue certificate for that lot is published on the batch page and states purity of at least 99.8 percent on the same VaultLabs template used for the rest of the lyophilized catalogue. A certificate for one fill does not qualify another fill. A certificate for a blend does not qualify a single-sequence vial that happens to share part of a name. Do not copy a purity figure from a different product, from a photograph of another vial, or from a paper into the receiving file. Match the printed name, the nominal mass and the lot number on the vial to the published record. If those three do not agree, hold the unit and ask for the document that belongs to that unit before it leaves quarantine. Enter the printed lot at batch verification.
Storage and research-use boundary
Keep the sealed lyophilized vial at 2 to 8 degrees Celsius, protected from light and from moisture, until it is opened under the laboratory's own procedure. Allow the closed vial to reach room temperature before the seal is broken, so water from humid coastal air does not condense on the dry cake. Bacteriostatic water and sterile water are separate catalogue lines. They are not packed inside the peptide box, because the receiving laboratory chooses the medium in its own procedure. VaultLabs does not publish a preparation method on this page. After the seal is opened, solution age, container and freeze cycles are controlled by the laboratory, not by the catalogue page.
The material is supplied for in vitro laboratory research only. It is not for human or animal consumption. It is not an approved medicine, not a finished cosmetic, and not a personal-use item. Papers cited on the compound monograph describe other people's experiments. Those papers are not a description of what this vial will do, and they are not instructions for any person or animal. A buyer who needs a registered medicine should use a licensed pharmacy channel. This page exists so a procurement officer in the UAE can identify the catalogue line, the fill, the price band and the paperwork before raising an order.
Research interest areas
11 residues. Sequence pGlu-Glu-Gln-Leu-Glu-Arg-Ala-Leu-Asn-Ser-Ser.
CAS 1208243-50-8. Formula C51H84N16O21. Molecular weight 1257.3 g/mol.
Not erythropoietin.
A third-party sheet that prints a different formula is not the record used here.
Storage information
2–8 °C (lyophilized, sealed)
2–8 °C sealed lyophilized storage, protected from light and humidity.
Stability notes
Keep the sealed lyophilized vial at 2 to 8 degrees Celsius, protected from light and from moisture, until it is opened under the laboratory's own procedure. Allow the closed vial to reach room temperature before the seal is broken, so water from humid coastal air does not condense on the dry cake. Bacteriostatic water and sterile water are separate catalogue lines. They are not packed inside the peptide box, because the receiving laboratory chooses the medium in its own procedure. VaultLabs does not publish a preparation method on this page. After the seal is opened, solution age, container and freeze cycles are controlled by the laboratory, not by the catalogue page.
Selected literature
Named papers behind the statements on this page. Each entry resolves on PubMed and through its DOI, so you can read the source rather than take our summary of it. Inclusion describes the research record and is not a claim about this material’s suitability for any use.
The Non-Erythropoietic EPO Analogue Cibinetide Inhibits Osteoclastogenesis In Vitro and Increases Bone Mineral Density in Mice.
Awida Z, et al. · International Journal of Molecular Sciences · 2021
In vitro and mouse work on cibinetide. Literature context only. Not a VaultLabs result.
Cibinetide Protects Isolated Human Islets in a Stressful Environment and Improves Engraftment in the Perspective of Intra Portal Islet Transplantation.
Yao M, et al. · Cell Transplantation · 2021
An isolated-islet study of cibinetide. Not a description of this 10 mg vial and not a use instruction.
Databases and verification
Registry and database entries for independent identity checks. These are standing searches rather than fixed records, so they stay current as new work is indexed.
- ARA-290 on PubChem — PubChem
- ARA-290 literature search — PubMed
- CAS Common Chemistry — 1208243-50-8 — CAS