Buspirone

Also known as: 8-[4-(4-(2-Pyrimidinyl)-1-piperazinyl)butyl]-8-azaspiro[4.5]decane-7,9-dione, 8-[4-[4-(2-pyrimidinyl)-1-piperazinyl]butyl]-8-azaspiro[4.5]decane-7,9-dione, Buspar, Bespar, Ansial, Ansiced, Anxiron, Axoren, Buspirona, Buspironum

Buspirone (CAS 36505-84-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C21H31N5O2 and a molecular weight of 385.50300 g/mol. Key properties include a melting point of 41678ºC, a boiling point of 613.9ºC at 760 mmHg, a density of 1.24g/cm3 and a flash point of 325.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 36505-84-7
Jingsj CID: J-33523-6
Molecular Formula: C₂₁H₃₁N₅O₂
Molecular Weight: 385.50300 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	41678ºC
Boiling Point	613.9ºC at 760 mmHg
Density	1.24g/cm3
Flash Point	325.1ºC
Exact Mass	385.24800
PSA	69.64000
LogP	2.02900
Storage Conditions	2-8°C

Activity & Biological Data

Additional Information	[1]. Salimi A, et, al. Analysis of Toxicity Effects of Buspirone, Cetirizine and Olanzapine on Human Blood Lymphocytes: in Vitro Model. Curr Clin Pharmacol. 2018;13(2):120-127. [2]. Kim JK, et, al. Buspirone alleviates anxiety, depression, and colitis; and modulates gut microbiota in mice. Sci Rep. 2021 Mar 17;11(1):6094.

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Buspirone?

The CAS number of Buspirone is 36505-84-7.

What are the molecular formula and molecular weight of Buspirone?

Buspirone has molecular formula C21H31N5O2 and molecular weight 385.50300 g/mol.

What are the upstream and downstream products of Buspirone?

For Buspirone, Upstream Products: 3,3-Tetramethyleneglutarimide, 2-(1-Piperazinyl)pyrimidine, 1,1-Cyclopentanediacetic anhydride; Downstream Products: 6-Hydroxy Buspirone.

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. "Buspirone (CAS 36505-84-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33523-6 (accessed 2026-11-06).

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