R&D Systems Inc. Tocris Bioscience Boston Biochem

α-helical CRF 9-41

Cat. No. 1184

a-helical CRF 9-41 Asp-Leu-Thr-Phe-His-Leu-Leu-Arg-Glu-Met-Leu-Glu-Met-Ala-Lys-Ala-Glu-Gln-Glu-Ala-Glu-Gln-Ala-Ala-Leu-Asn-Arg-Leu-Leu-Leu-Glu-Glu-Ala-NH2

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Alternative Name: α-helical-Corticotropin-Releasing Factor 9-41

Biological Activity

Corticotropin-releasing factor receptor antagonist (Ki values are 17, 5 and 0.97 at human CRF1, rat CRF2α and mouse CRF2β receptors respectively).

Licensing Information

Sold with the permission of the SALK Institute

Technical Data


(Modifications: Ala-33 = C-terminal amide)

Soluble to 1 mg/ml in 0.1% TFA
Desiccate at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

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Safety Data Sheet: View Safety Data Sheet


Swerdlow et al (1989) Potentiation of acoustic startle by corticotropin-releasing factor (CRF) and by fear are both reversed by α-helical CRF (9-41). Neuropsychopharmacology 2 285. PMID: 2610824.

Kask et al (1997) Alpha-helical(9-41) revents anxiogenic-like effect of NPY Y1 receptor antagonist BIBP3226. NeuroReport 8 3645. PMID: 9427342.

Perrin and Vale (1999) Corticotropin releasing factor receptors and their ligand family. Ann.N.Y.Acad.Sci. 885 312. PMID: 10816663.

If you know of a relevant citation for this product please let us know.

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