tert-Butyl [(4-methylphenyl)sulfonyl]carbamate

Also known as: N-(tert-Butoxycarbonyl)-p-toluenesulfonamide, N-Boc-p-toluenesulfonamide, tert-Butyl tosylcarbamate, Tosylcarbamic acid tert-butyl ester, N-Boc-toluenesulfonamide, tert-Butyl N-(p-tosyl)carbamate, N-(p-Tolylsulfonyl)carbamic acid tert-butyl ester, N-(tert-Butoxycarbonyl)-4-methylbenzenesulfonamide, Carbamic acid, N-[(4-methylphenyl)sulfonyl]-, 1,1-dimethylethyl ester

tert-Butyl [(4-methylphenyl)sulfonyl]carbamate (CAS 18303-04-3) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C12H17NO4S and a molecular weight of 271.333 g/mol. Key properties include a melting point of 121-123ºC(lit.) and a density of 1.2±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18303-04-3
Jingsj CID: J-16019-0
Molecular Formula: C₁₂H₁₇NO₄S
Molecular Weight: 271.333 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	121-123ºC(lit.)
Density	1.2±0.1 g/cm3
Exact Mass	271.087830
PSA	80.85000
LogP	2.56
Refractive Index	1.522
Additional Property	chloroform: soluble25mg/mL, clear, colorless

Customs & Trade Information

HS Code	2935009090
Summary	2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of tert-Butyl [(4-methylphenyl)sulfonyl]carbamate?

The CAS number of tert-Butyl [(4-methylphenyl)sulfonyl]carbamate is 18303-04-3.

What are the molecular formula and molecular weight of tert-Butyl [(4-methylphenyl)sulfonyl]carbamate?

tert-Butyl [(4-methylphenyl)sulfonyl]carbamate has molecular formula C12H17NO4S and molecular weight 271.333 g/mol.

What are the upstream and downstream products of tert-Butyl [(4-methylphenyl)sulfonyl]carbamate?

For tert-Butyl [(4-methylphenyl)sulfonyl]carbamate, Upstream Products: Di-tert-butyl dicarbonate, p-Toluenesulfonamide, p-Toluenesulfonyl isocyanate; Downstream Products: p-Toluenesulfonamide, tert-Butyl N-phenylcarbamate, tert-Butyl N-(3-hydroxy-2,2-dimethylpropyl)carbamate.

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. "tert-Butyl [(4-methylphenyl)sulfonyl]carbamate (CAS 18303-04-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16019-0 (accessed 2026-11-09).

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