tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate

Also known as: 1-Boc-4-(4-hydroxyphenyl)piperazine, 4-(4-Boc-1-piperazinyl)phenol, N-Boc-4-(4-hydroxyphenyl)piperazine, 4-(4-Hydroxyphenyl)piperazine-1-carboxylic acid tert-butyl ester, 4-(4-hydroxyphenyl)-1-piperazinecarboxylic acid tert-butyl ester, 1-(tert-butoxycarbonyl)-4-(4-hydroxyphenyl)piperazine, 1-Piperazinecarboxylic acid, 4-(4-hydroxyphenyl)-, 1,1-dimethylethyl ester

tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate (CAS 158985-25-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C15H22N2O3 and a molecular weight of 278.347 g/mol. Key properties include a boiling point of 436.0±40.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 217.5±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 158985-25-2
Jingsj CID: J-1326048-5
Molecular Formula: C₁₅H₂₂N₂O₃
Molecular Weight: 278.347 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	436.0±40.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	217.5±27.3 °C
Exact Mass	278.163055
PSA	53.01000
LogP	1.52
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.557

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 tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate?

The CAS number of tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate is 158985-25-2.

What are the molecular formula and molecular weight of tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate?

tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate has molecular formula C15H22N2O3 and molecular weight 278.347 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. "tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate (CAS 158985-25-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1326048-5 (accessed 2026-11-09).

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