1-(Methylsulfonyl)piperazine

Also known as: 1-Methanesulfonylpiperazine, 1-METHANESULFONYL-PIPERAZINE, 1-METHYLSULPHONYLPIPERAZINE, 1-(Methylsulphonyl)piperazine, Piperazine, 1-(methylsulfonyl)-, MFCD02153225, AKOS B003961, CHEMBRDG-BB 3003961, 1-N-METHANESULFONYLPIPERAZINE

1-(Methylsulfonyl)piperazine (CAS 55276-43-2) is a compound in the Sulfur Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H12N2O2S and a molecular weight of 164.226 g/mol. Key properties include a melting point of 99ºC, a boiling point of 280.6±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 123.5±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 55276-43-2
Jingsj CID: J-991582-4
Molecular Formula: C₅H₁₂N₂O₂S
Molecular Weight: 164.226 g/mol
Category: Sulfur Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	99ºC
Boiling Point	280.6±50.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	123.5±30.1 °C
Exact Mass	164.061951
PSA	57.79000
LogP	-0.67
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.533

Customs & Trade Information

HS Code	2933599090
Summary	2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. 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 1-(Methylsulfonyl)piperazine?

The CAS number of 1-(Methylsulfonyl)piperazine is 55276-43-2.

What are the molecular formula and molecular weight of 1-(Methylsulfonyl)piperazine?

1-(Methylsulfonyl)piperazine has molecular formula C5H12N2O2S and molecular weight 164.226 g/mol.

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. "1-(Methylsulfonyl)piperazine (CAS 55276-43-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-991582-4 (accessed 2026-11-06).

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