4-Cyano-4'-pentylbiphenyl

Also known as: 5CB, 4'-Pentyl-4-biphenylcarbonitrile, 4'-n-Pentyl-(1,1'-biphenyl)-4-carbonitrile, 4-Amyl-4'-cyanobiphenyl, 4-Cyano-4'-n-pentylbiphenyl, 4-Pentyl-4'-cyanobiphenyl, CB5, 4'-Pentylbiphenyl-4-carbonitrile, 4-n-Amyl-4'-cyanobiphenyl, 4-n-Pentyl-4'-cyanobiphenyl, 4'-Pentyl-[1,1'-biphenyl]-4-carbonitrile, 4-Cyano-4'-pentybiphenyl, 4-Pentyl-4'-Cyanobiphenyl, 5cb, RO-CM-5115, 4'-pentyl-biphenyl-4-carbonitrile

4-Cyano-4'-pentylbiphenyl (CAS 40817-08-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H19N and a molecular weight of 249.350 g/mol. Key properties include a melting point of 34 °C, a boiling point of 361.6±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 193.5±17.3 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

40817-08-1

Jingsj CID

J-1348651-8

Molecular Formula

C₁₈H₁₉N

Molecular Weight

249.350 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026