ARA-290: Handling, Storage, and Reconstitution Guide

This guide covers lab handling, storage, and reconstitution of ARA-290, also called cibinetide. ARA-290 is supplied as a freeze-dried research peptide. Every step below is lab best practice for in-vitro and animal-model preparation. None of it is guidance for human use.

What are the basics of ARA-290 handling and storage?

ARA-290 ships as a solid, white, freeze-dried powder in a sealed glass vial. Freeze-dried is also called lyophilized. In this form, store it at or below 25 degrees Celsius. Keep it sealed and away from heat, light, and moisture.

For long storage, keep the material freeze-dried and in a fridge or freezer. Limit contact with humidity and temperature swings. This keeps the peptide intact across a study.

Before opening a vial, check the material against its documents:

• Molecular formula: C51H84N16O21
• Molecular weight: about 1257.3 g/mol
• CAS number: 1208243-50-8

Matching these to the certificate of analysis is the first tracking checkpoint. It mirrors the checks in the ARA-290 mechanism of action overview.

ARA-290 is a defined peptide of 11 residues. So it handles like a small, well-studied freeze-dried material. Standard peptide care applies. The main focus is on two risks. The first is moisture uptake. The second is repeated warming and cooling. These are the two factors most likely to harm a freeze-dried batch before it reaches the assay.

How is ARA-290 reconstituted for in-vitro work?

For lab preparation, ARA-290 is usually reconstituted with bacteriostatic water. Another solvent that suits the assay also works. Add the liquid slowly against the inner wall of the vial, not straight onto the powder. Let the peptide dissolve without strong mixing.

Swirl gently. Avoid shaking, which can damage the peptide and cause foam.

• Add liquid down the vial wall, not onto the powder pellet.
• Let the material dissolve gently, and do not vortex hard.
• Check that the solution is fully dissolved before use.
• Work out strength from the labeled mass and liquid volume.

Puritide supplies ARA-290 in a 10 mg vial. So the strength of the working stock follows directly from the volume of liquid chosen for the assay.

Why split ARA-290 into aliquots?

Repeated freeze-thaw cycles often break down peptides. After reconstitution, split the solution into single-use portions, called aliquots. Then each test draws from a vial thawed only once.

Label every aliquot with the compound name, strength, date, and lot number. This keeps signaling results comparable across repeats. It also protects the material behind ARA-290 research applications.

How should ARA-290 solutions be stored?

Store reconstituted aliquots frozen for longer holds. Keep any short-term working solution cold and out of light. Hold conditions steady through the study. Check storage records as part of quality control.

Log the time each aliquot spends at each temperature. This supports repeatable results and makes audits easier.

How are the COA and lot checked?

Each ARA-290 batch ships with a certificate of analysis, or COA, checked by a third party. It documents:

• Purity, by HPLC or reverse-phase chromatography.
• Identity, confirmed by mass spectrometry.
• Lot, test date, and method details.

Check the COA against the vial label before starting work. Keep it with the batch records. Labs may also request a sample COA before purchase to confirm test methods.

What PPE and lab rules apply to ARA-290?

Handle ARA-290 as an investigational material. Follow lab SOPs, chemical hygiene plans, and approved protocols. Wear a lab coat, gloves, and eye protection. Use fume hoods or other controls where required. Only trained staff should handle it, in controlled settings, under the rules that apply.

Can one SOP cover related peptides?

Yes. Labs that run several healing and recovery peptides gain from a shared handling SOP. The reconstitution and cold storage steps here match the BPC-157 handling guide and the KPV handling guide. So a single documented workflow can cover several compounds. Full spec data is on the ARA-290 product page.

Checking also means matching the vial to its listed synonyms. These include cibinetide, ARA290, and pHBSP. On receipt, confirm the expected white, freeze-dried look. Resolve any odd look or label before reconstitution. Catching a problem at intake costs far less than finding it after a batch has entered an assay.

How is a traceable ARA-290 record built?

Good tracing turns a single ARA-290 batch into repeatable data. A complete record includes:

• The vial lot number, linked to its certificate of analysis.
• The reconstitution solvent and final strength.
• Each aliquot's storage temperature and freeze-thaw count.

Results may later be reviewed or repeated by another lab. This chain of records lets a batch be rebuilt exactly.

Labs that run ARA-290 across several studies gain from a standing log with these details in one place. Record the worked-out strength next to the labeled mass and liquid volume. This guards against copying errors. It keeps the material behind every signaling test consistent and open to audit through the study.

Consistent handling is, in the end, a way to make results repeatable. Picture an ARA-290 batch that is checked against its COA and reconstituted gently. It is split into aliquots, stored cold, and fully documented. That batch gives every later test the same reliable starting material. Other labs can then compare results and build on each other's work with confidence.

Sometimes a study proves hard to repeat. A complete handling record often helps labs tell a real biological difference from a batch artifact. That is why careful ARA-290 handling pays off across a whole project.

For research use only. These handling notes describe laboratory practice for ARA-290 as a research material supplied by Puritide Research. ARA-290 is not approved for human or veterinary use, and nothing here constitutes medical or administration guidance.