Pirenperone

Also known as: 3-(2-(4-(4-Fluorobenzoyl)piperidin-1-yl)ethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one, 3-[2-[4-(4-fluorobenzoyl)piperidin-1-yl]ethyl]-2-methylpyrido[1,2-a]pyrimidin-4-one, R-47,465, R 47465, Pirenperona, Pirenperonum, 4H-Pyrido[1,2-a]pyrimidin-4-one, 3-[2-[4-(4-fluorobenzoyl)-1-piperidinyl]ethyl]-2-methyl-, EINECS 278-213-5

Pirenperone (CAS 75444-65-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C23H24FN3O2 and a molecular weight of 393.45 g/mol. Key properties include a boiling point of 556.3ºC at 760 mmHg, a density of 1.26g/cm3 and a flash point of 290.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 75444-65-4
Jingsj CID: J-1958480-5
Molecular Formula: C₂₃H₂₄FN₃O₂
Molecular Weight: 393.45 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	556.3ºC at 760 mmHg
Density	1.26g/cm3
Flash Point	290.2ºC
Exact Mass	393.18500
PSA	54.68000
LogP	3.21730
Refractive Index	1.629

Activity & Biological Data

Additional Information	[1]. Krstić MK, et, al. Divergent effects of pirenperone, a 5-HT2 antagonist, on the pressor and tachycardic responses to 5-HT in guinea-pigs. Arch Int Physiol Biochim. 1983 Nov;91(4):345-9. [2]. Ansseau M, et, al. Pilot study of a specific serotonergic antagonist, pirenperone, in the treatment of anxiety disorders. Acta Psychiatr Belg. Sep-Oct 1983;83(5):517-24.

Frequently Asked Questions

What is the CAS number of Pirenperone?

The CAS number of Pirenperone is 75444-65-4.

What are the molecular formula and molecular weight of Pirenperone?

Pirenperone has molecular formula C23H24FN3O2 and molecular weight 393.45 g/mol.

What are the upstream and downstream products of Pirenperone?

For Pirenperone, Upstream Products: 4-(4-Fluorobenzoyl)piperidine hydrochloride, 4-Methyl-2-pentanone, 3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Pirenperone (CAS 75444-65-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958480-5 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.