Last reviewed: October 2026 · Cleared Peptides research team
Setipiprant (ACT-129968, KYTH-105) is a small molecule, CAS 866460-33-5, formula C24H19FN2O3. Published descriptions class it as a selective antagonist of prostaglandin D2 receptor 2 (DP2 / CRTH2). “Powder” on a catalog label refers to the physical form, not to a second compound.
| Name | Setipiprant |
|---|---|
| Other names | ACT-129968; KYTH-105 |
| CAS number | 866460-33-5 |
| Molecular formula | C24H19FN2O3 |
| Molecular weight | 402.42 g/mol |
| Class | DP2 (CRTH2) receptor antagonist |
| Physical form named by the request | Powder. Handled as a laboratory solid. No solution recipe is given. |
| Catalog status | Not a current Cleared Peptides lot. |
Receptor class
See OC000459 for a different DP2 antagonist. The two codes are not interchangeable.
Frequently Asked Questions
What does setipiprant powder mean?
It means the solid form of setipiprant, CAS 866460-33-5. It is not a blend.
Is the CAS number 866460-33-5?
Yes. That is the registry number on the public record used for this page.
Is this for human use?
No. Laboratory reference only.
Selected References
Registry records and peer-reviewed literature listed as scientific background. Citation does not imply endorsement, a benefit, or any use.
- Public chemical record for setipiprant, CAS 866460-33-5, formula C24H19FN2O3, code ACT-129968. Cited as the identity record.
Research Use Only Notice
This guide is provided for educational and laboratory reference purposes. It summarizes published structural and biochemical literature. It does not describe, recommend, or imply any use in humans or animals. These materials are not drugs, foods, cosmetics, or dietary supplements on this page, are not offered here as a treatment, and no dosing or administration instructions are provided. Cleared Peptides does not currently list a lot for every compound on this page.
