tert-Butyl 4-cyano-4-(4-fluorophenyl)piperidine-1-carboxylate

Also known as: 1-Piperidinecarboxylic acid, 4-cyano-4-(4-fluorophenyl)-, 1,1-dimethylethyl ester, 2-Methyl-2-propanyl 4-cyano-4-(4-fluorophenyl)-1-piperidinecarboxylate, 1-Boc-4-cyano-4-(4-fluorophenyl)piperidine, ar2189, MFCD09788613, DTXSID10445867, A911351, AB91620, AS-45292

tert-Butyl 4-cyano-4-(4-fluorophenyl)piperidine-1-carboxylate (CAS 256951-79-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C17H21FN2O2 and a molecular weight of 304.359 g/mol. Key properties include a boiling point of 423.0±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 209.7±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 256951-79-8
Jingsj CID: J-1149934-6
Molecular Formula: C₁₇H₂₁FN₂O₂
Molecular Weight: 304.359 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	423.0±45.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	209.7±28.7 °C
Exact Mass	304.158691
PSA	53.33000
LogP	2.74
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.538

Customs & Trade Information

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) 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-cyano-4-(4-fluorophenyl)piperidine-1-carboxylate?

The CAS number of tert-Butyl 4-cyano-4-(4-fluorophenyl)piperidine-1-carboxylate is 256951-79-8.

What are the molecular formula and molecular weight of tert-Butyl 4-cyano-4-(4-fluorophenyl)piperidine-1-carboxylate?

tert-Butyl 4-cyano-4-(4-fluorophenyl)piperidine-1-carboxylate has molecular formula C17H21FN2O2 and molecular weight 304.359 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-cyano-4-(4-fluorophenyl)piperidine-1-carboxylate (CAS 256951-79-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1149934-6 (accessed 2026-11-09).

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