ATX-304 Β· O-304 research
ATX-304, O-304 and OS-01: Understanding the Names
ATX-304 was previously published as O304, often written O-304. OS-01 needs an identity check: some sellers use it for O304, while skin research uses OS-01 for a different peptide.
Which names belong together?
The 2025 ATX-304 paper explicitly identifies O304 as the compound’s former name. O-304 is the hyphenated spelling encountered in product searches. Searching both ATX-304 and O304 helps connect newer publications with earlier work.[1]
| Name | Context | What to check |
|---|---|---|
| ATX-304 / ATX304 | Current development name and spelling variant | Exact chemical form and study material |
| O304 / O-304 | Earlier compound designation | Original publication and formulation |
| OS-01 | Ambiguous across product categories | Small molecule or skin-research peptide? |
Why OS-01 needs extra care
Published skin research identifies OS-01, also called Pep 14, as a senotherapeutic peptide. A 2024 split-face trial examined an OS-01-containing topical formulation against its vehicle in 22 participants. That evidence concerns the skin formulation and does not establish properties of ATX-304.[2]
Separately, a supplier listing uses OS-01 for capsules it describes as containing O304. This is evidence of that seller’s naming practice, not proof of a universal scientific synonym or of the capsule contents.[3]
Build a usable identity record
Start with the compound identity, then record its form, formulation, strength and lot. A useful purchasing record might read βATX-304 / O-304, sodium salt, selected capsule strength, assigned lot.β Keep an ambiguous search term in a separate notes field so it cannot replace the chemical specification.
The DA listing specifies sodium salt and offers 50 mg and 200 mg capsule variations, each with 60 capsules. A shared development name does not establish that a finished capsule matches the material in a publication. Read the current documentation notes alongside the report.
Common questions
Should OS-01 be used as an unqualified synonym?
No. Identify which compound the source means before importing its claims, chemical identifiers or study results.
Does this page describe OneSkin’s peptide?
No. DA’s linked product is listed as ATX-304 sodium salt. The skin-peptide discussion explains the name collision.
Review the material and its documentation
Connect the literature to the current product specification, then check the assigned batch report and any stated limitations.