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

Also known as: 1-Boc-4-(4-cyanophenyl)piperazine, 4-(4-cyanophenyl)-1-piperazinecarboxylic acid tert-butyl ester, 4-(4-cyanophenyl)piperazine-1-carboxylic acid tert-butyl ester, tert-butyl 4-(4-cyanophenyl)tetrahydro-1(2H)-pyrazinecarboxylate, N-tert-butoxycarbonyl-4-(4-cyanophenyl)piperazine, 4-(4-Cyano-phenyl)-piperazine-1-carboxylic acid tert-butyl ester, t-butyl 4-(4-cyanophenyl)piperazine-1-carboxylate, 4-(Piperazin-4-yl)benzonitrile, N1-BOC protected

tert-butyl 4-(4-cyanophenyl)piperazine-1-carboxylate (CAS 186650-98-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H21N3O2 and a molecular weight of 287.35700 g/mol. Key properties include a melting point of 128-126ºC, a boiling point of 445.7ºC at 760 mmHg, a density of 1.17 g/cm3 and a flash point of 223.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 186650-98-6
Jingsj CID: J-1091688-8
Molecular Formula: C₁₆H₂₁N₃O₂
Molecular Weight: 287.35700 g/mol
Category: Organic Acids
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	128-126ºC
Boiling Point	445.7ºC at 760 mmHg
Density	1.17 g/cm3
Flash Point	223.4ºC
Exact Mass	287.16300
PSA	56.57000
LogP	2.61828
Vapor Pressure	3.86E-08mmHg at 25°C
Refractive Index	1.571

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-cyanophenyl)piperazine-1-carboxylate?

The CAS number of tert-butyl 4-(4-cyanophenyl)piperazine-1-carboxylate is 186650-98-6.

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

tert-butyl 4-(4-cyanophenyl)piperazine-1-carboxylate has molecular formula C16H21N3O2 and molecular weight 287.35700 g/mol.

What are the upstream and downstream products of tert-butyl 4-(4-cyanophenyl)piperazine-1-carboxylate?

For tert-butyl 4-(4-cyanophenyl)piperazine-1-carboxylate, Upstream Products: Di-tert-butyl dicarbonate, 4-Piperazinobenzonitrile, 4-Chlorobenzonitrile; Downstream Products: 1-Boc-4-(4-Formylphenyl)piperazine, tert-Butyl 4-(4-(aminomethyl)phenyl)piperazine-1-carboxylate, 4-Piperazinobenzonitrile.

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-cyanophenyl)piperazine-1-carboxylate (CAS 186650-98-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1091688-8 (accessed 2026-11-09).

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