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Buspirone hydrochloride

Also known as: 8-[4-[4-(2-Pyrimidinyl)-1-piperazinyl]butyl]-8-azaspiro[4.5]decane-7,9-dione hydrochloride, Buspar, Axoren, Bespar, Buspinol, MJ 9022-1, N-[4-[4-(2-Pyrimidinyl)-1-piperazinyl]butyl]-8-azaspiro[4.5]decane-7,9-dione hydrochloride

Buspirone hydrochloride (CAS 33386-08-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C21H32ClN5O2 and a molecular weight of 421.96400 g/mol. Key properties include a melting point of 201.5-202.50C, a boiling point of 613.9ºC at 760mmHg, a density of 1.24g/cm3 and a flash point of 325.1ºC. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H301 — Toxic if swallowed and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
33386-08-2
Jingsj CID
J-46003-7
Molecular Formula
C21H32ClN5O2
Molecular Weight
421.96400 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point201.5-202.50C
Boiling Point613.9ºC at 760mmHg
Density1.24g/cm3
Flash Point325.1ºC
Exact Mass421.22400
PSA69.64000
LogP2.83100

GHS Safety & Compliance

Flammable / Acute Toxicity / Health HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H301 — Toxic if swallowed
  • H311 — Toxic in contact with skin
  • H331 — Toxic if inhaled
  • H370 — Causes damage to organs

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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 hydrochloride?

The CAS number of Buspirone hydrochloride is 33386-08-2.

What are the molecular formula and molecular weight of Buspirone hydrochloride?

Buspirone hydrochloride has molecular formula C21H32ClN5O2 and molecular weight 421.96400 g/mol.

Is Buspirone hydrochloride hazardous?

Buspirone hydrochloride has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H301 — Toxic if swallowed; H311 — Toxic in contact with skin.

What are the upstream and downstream products of Buspirone hydrochloride?

For Buspirone hydrochloride, Upstream Products: 1,4-Dibromobutane, 2-(1-Piperazinyl)pyrimidine, 3,3-Tetramethyleneglutarimide.

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

Last updated:

How to cite: Jingsj. "Buspirone hydrochloride (CAS 33386-08-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46003-7 (accessed 2026-11-09).

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