4-[4-(methylsulfonyl)piperazin-1-yl]aniline

Also known as: 4-(4-Methanesulfonyl-piperazin-1-yl)-phenylamine, 4-(4-Mesylpiperazin-1-yl)aniline, 1-(4-Aminophenyl)-4-(methylsulphonyl)piperazine, 4-(4-methylsulfonyl-1-piperazinyl)aniline, 4-(4-methylsulfonylpiperazin-1-yl)aniline, 4-[4-(Methylsulfonyl)-1-piperazinyl]aniline, Benzenamine, 4-[4-(methylsulfonyl)-1-piperazinyl]-, [4-(4-mesylpiperazin-1-yl)phenyl]amine, {4-[4-(methylsulfonyl)piperazin-1-yl]phenyl}amine, AKOS BB-8668, ASISCHEM Y80106

4-[4-(methylsulfonyl)piperazin-1-yl]aniline (CAS 442549-42-0) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C11H17N3O2S and a molecular weight of 255.337 g/mol. Key properties include a boiling point of 475.7±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 241.5±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 442549-42-0
Jingsj CID: J-1453010-0
Molecular Formula: C₁₁H₁₇N₃O₂S
Molecular Weight: 255.337 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	475.7±55.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	241.5±31.5 °C
Exact Mass	255.104141
PSA	75.02000
LogP	-0.25
Vapor Pressure	0.0±1.2 mmHg at 25°C
Refractive Index	1.637

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 4-[4-(methylsulfonyl)piperazin-1-yl]aniline?

The CAS number of 4-[4-(methylsulfonyl)piperazin-1-yl]aniline is 442549-42-0.

What are the molecular formula and molecular weight of 4-[4-(methylsulfonyl)piperazin-1-yl]aniline?

4-[4-(methylsulfonyl)piperazin-1-yl]aniline has molecular formula C11H17N3O2S and molecular weight 255.337 g/mol.

What are the upstream and downstream products of 4-[4-(methylsulfonyl)piperazin-1-yl]aniline?

For 4-[4-(methylsulfonyl)piperazin-1-yl]aniline, Upstream Products: 1-(methylsulfonyl)-4-(4-nitrophenyl)piperazine, 1-(4-Nitrophenyl)piperazine, tert-Butyl 4-(4-nitrophenyl)piperazine-1-carboxylate.

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. "4-[4-(methylsulfonyl)piperazin-1-yl]aniline (CAS 442549-42-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1453010-0 (accessed 2026-11-09).

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