Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
CAS 0 records

CAS 24305-27-9

CAS 24305-27-9 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Check this CAS numberBrowse annexes

Chemical identity and properties

PubChem 2D chemical structure for CAS 24305-27-9
CAS 24305-27-9PubChem CID 638678

Protirelin

Protirelin is a tripeptide composed of L-pyroglutamyl, L-histidyl and L-prolinamide residues joined in sequence. It has a role as a human metabolite. It is a peptide hormone and a tripeptide. — ChEBI

IUPAC name
(2S)-N-[(2S)-1-[(2S)-2-carbamoylpyrrolidin-1-yl]-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]-5-oxopyrrolidine-2-carboxamide
Molecular formula
C16H22N6O4
Molecular weight
362.38 g/mol
Exact mass
362.17025320 Da
XLogP3
-2.5
Topological polar surface area
150.0 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
3

Also known as

ThyroliberinLopremoneSynthetic TRHRifathyroinThypinoneThyrotropin-releasing factorTSH-releasing factorProtireline
16 more reported names
Thyrotropic-releasing factor5-Oxo-L-prolyl-L-histidyl-L-prolinamideABBOTT-38579ProtirelinumTHYREL TRHSynthetic tsh-releasing factorRelefact TRHAbbott 38579Protirelin, syntheticProtirelina5-oxo-pro-his-pro-nh2L-Pyroglutamyl-L-histidyl-L-prolineamideProtireline [INN-French]Protirelinum [INN-Latin]FDA 1725L-Prolinamide, 5-oxo-L-prolyl-L-histidyl-
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 24305-27-9

0 total
No records found for this CAS number.

How CAS 24305-27-9 is used on this site

CAS 24305-27-9 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 24305-27-9 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.