Chinese Japanese Germany Korea
ChemicalBook >> CAS DataBase List >>4-Cyano-4'-pentylbiphenyl

4-Cyano-4'-pentylbiphenyl

4-Cyano-4'-pentylbiphenyl Structure
4-Cyano-4'-pentylbiphenyl structure
CAS No.
40817-08-1
Chemical Name:
4-Cyano-4'-pentylbiphenyl
Synonyms
5CB;4'-Pentyl-4-biphenylcarbonitrile;CB5;RO-CM-5115;4-Cyano-4'-pentyL;TIMTEC-BB SBB008542;Amyl biphenyl nitrile;4-AMYL-4'-CYANOBIPHENYL;4-cyano-4-pentylbipheny;Pentyl biphenyl nitrile
CBNumber:
CB9853607
Molecular Formula:
C18H19N
Molecular Weight:
249.35
MDL Number:
MFCD00036350
MOL File:
40817-08-1.mol
MSDS File:
SDS
Last updated:2026-05-28 05:20:05
Request For Quotation

4-Cyano-4'-pentylbiphenyl Properties

Melting point 34 °C
Boiling point 140-150 °C0.5 mm Hg(lit.)
Density 1.008 g/mL at 25 °C(lit.)
refractive index n20/D 1.532(lit.)
Flash point >230 °F
storage temp. Sealed in dry,Room Temperature
solubility Chloroform (Slightly), Methanol (Slightly)
form liquid crystal (nematic)
color Off-White
Water Solubility insoluble
InChI InChI=1S/C18H19N/c1-2-3-4-5-15-6-10-17(11-7-15)18-12-8-16(14-19)9-13-18/h6-13H,2-5H2,1H3
InChIKey HHPCNRKYVYWYAU-UHFFFAOYSA-N
SMILES C1(C2=CC=C(CCCCC)C=C2)=CC=C(C#N)C=C1
CAS DataBase Reference 40817-08-1(CAS DataBase Reference)
FDA UNII 2R6RYG3ZGM
NIST Chemistry Reference [1,1'-Biphenyl]-4-carbonitrile, 4'-pentyl-(40817-08-1)
EPA Substance Registry System [1,1'-Biphenyl]-4-carbonitrile, 4'-pentyl- (40817-08-1)
UNSPSC Code 12352103
NACRES NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H317
Precautionary statements  P261-P272-P280-P302+P352-P333+P313-P362+P364
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  Xn
Risk Statements  20/21/22-36/37/38
Safety Statements  23-26-28-36-36/37/39
RIDADR  3276
WGK Germany  3
TSCA  TSCA listed
HazardClass  6.1
PackingGroup  III
HS Code  29269090
Storage Class 10 - Combustible liquids
Hazard Classifications Skin Sens. 1
NFPA 704
1
2 1

4-Cyano-4'-pentylbiphenyl price More Price(67)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 328510 4′-Pentyl-4-biphenylcarbonitrile liquid crystal (nematic), 98% 40817-08-1 1g $134 2026-04-30 Buy
TCI Chemical C1550 4-Cyano-4'-pentylbiphenyl >98.0%(GC) 40817-08-1 1g $59 2026-04-30 Buy
TCI Chemical C1550 4-Cyano-4'-pentylbiphenyl >98.0%(GC) 40817-08-1 5g $166 2026-04-30 Buy
Usbiological 269124 4-Cyano-4'-N-pentylbiphenyl Asreported 40817-08-1 1g $359 2026-06-03 Buy
Usbiological 269124 4-Cyano-4'-N-pentylbiphenyl Asreported 40817-08-1 2g $512 2026-06-03 Buy
Product number Packaging Price Buy
328510 1g $134 Buy
C1550 1g $59 Buy
C1550 5g $166 Buy
269124 1g $359 Buy
269124 2g $512 Buy

4-Cyano-4'-pentylbiphenyl Chemical Properties, Uses, Production

Chemical Properties

white to light yellow crysta

Uses

4-Cyano-4'-n-pentylbiphenyl is used in the preparation of 4'-pentylbiphenyl-4-carboxylic acid by acidic hydrolysis using sulfuric acid as a reagent.

Uses

Intermediates of Liquid Crystals

General Description

4′-Pentyl-4-biphenylcarbonitrile (5CB) is a nematic liquid crystal. 5CB undergoes phase transition from crystalline to nematic then to isotropic state at 18oC and 35oC respectively. It may be produced by modifying biphenyl.2

Synthesis

4-BROMO-4'-N-PENTYLBIPHENYL

63619-59-0

4-Cyano-4'-pentylbiphenyl

40817-08-1

General procedure for the synthesis of 4'-n-pentyl-4-cyanobiphenyl from p-bromopentyl biphenyl: To a dry flask containing magnesium shavings (0.29 g, 12 mmol) was added a solution of 1-bromo-4-methylbenzene (1.37 g, 8.0 mmol) in tetrahydrofuran (THF, 8 mL) at room temperature. After stirring the reaction mixture for 2 h, N,N-dimethylformamide (DMF, 1.3 mL, 12 mmol) was slowly added. The reaction mixture was cooled to 0°C and stirring was continued for 2 hours. Subsequently, ammonia solution (7 mL, 28-30%) and iodine (I2, 4.06 g, 16 mmol) were added to the reaction system. After stirring the reaction mixture for 2 h at room temperature, it was poured into saturated aqueous sodium sulfite (Na2SO3) solution and extracted with chloroform (CHCl3, 3 x 30 mL). The organic layers were combined, dried with anhydrous sodium sulfite (Na2SO4) and filtered. After the solvent was removed by distillation under reduced pressure, the residue was purified by silica gel short column chromatography (eluent: hexane/ethyl acetate = 9:1, v/v) to afford pure 4-methylbenzonitrile (0.77 g) in 82% yield.

References

[1] Tetrahedron, 2013, vol. 69, # 5, p. 1462 - 1469

4-Cyano-4'-pentylbiphenyl synthesis

63619-59-0
40817-08-1
Synthesis of 4-Cyano-4'-pentylbiphenyl from 4-Bromo-4'-n-pentylbiphenyl

4-Cyano-4'-pentylbiphenyl Preparation Products And Raw materials

Raw materials

Magnesium iodine Ammonia N,N-Dimethylformamide 4-Bromo-4'-n-pentylbiphenyl

Preparation Products

4-Cyano-4'-pentylbiphenyl Suppliers

Global Suppliers ( 292)
Supplier Tel Email Country ProdList Advantage
Yantai Liquid Crystal Materials Co., Ltd. 0535-0535-6300169 15253505805 yangli@ytderun.com China 106 60
Hebei Han'en New Material Technology Co., Ltd 18032751346 2929218726@qq.com China 27 58
Nanbu County Chengxin Technology Co., Ltd. 0838-5675166 15883665058 nbcxkj@126.com China 956 55
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Sichuan Ruibo Technology Co., Ltd +86-817-5586080 China 41 69
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
INTATRADE GmbH +49 3493/605464 sales@intatrade.de Germany 3563 66
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Beijing HwrkChemical Technology Co., Ltd 89508211 18501085097 sales.bj@hwrkchemical.com China 9407 55
Supplier Advantage
Yantai Liquid Crystal Materials Co., Ltd. 60
Hebei Han'en New Material Technology Co., Ltd 58
Nanbu County Chengxin Technology Co., Ltd. 55
J & K SCIENTIFIC LTD. 76
Sichuan Ruibo Technology Co., Ltd 69
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
INTATRADE GmbH 66
Alfa Aesar 84
TCI (Shanghai) Development Co., Ltd. 81
Beijing HwrkChemical Technology Co., Ltd 55

View Latest Price from 4-Cyano-4'-pentylbiphenyl manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
4-Cyano-4'-pentylbiphenyl pictures 2026-09-15 4-Cyano-4'-pentylbiphenyl
40817-08-1
 0.99 RongNa Biotechnology Co.,Ltd
4'-pentyl-4'-cyanobiphenyl pictures 2026-09-15 4'-pentyl-4'-cyanobiphenyl
40817-08-1
 $53.00-517.00 25g 0.99 25kg Shanghai UCHEM Inc.
5CB pictures 2026-09-02 5CB
40817-08-1
 $6.00 1KG 99% Henan Fengda Chemical Co., Ltd
  • 5CB pictures
  • 5CB
    40817-08-1
  • $6.00
  • 99%
  • Henan Fengda Chemical Co., Ltd

4-Cyano-4'-pentylbiphenyl Spectrum

4-Cyano-4'-pentylbiphenyl(40817-08-1)MS4-Cyano-4'-pentylbiphenyl(40817-08-1)1HNMR4-Cyano-4'-pentylbiphenyl(40817-08-1)13CNMR4-Cyano-4'-pentylbiphenyl(40817-08-1)IR14-Cyano-4'-pentylbiphenyl(40817-08-1)Raman

40817-08-1 (4-Cyano-4'-pentylbiphenyl) Related Search:

tert-Amyl methyl ether 2,3,3',4,4',5-Hexachlorobiphenyl 4-Cyanobiphenyl Bifendate Benzonitrile
Cyclopentanecarbaldehyde Bifenthrin Biphenyl Cyclopentylmagnesium chloride 4-Cyano-4'-dodecylbiphenyl
2-Chlorophenyl cyclopentyl ketone 4'-Octyl[1,1'-biphenyl]-4-carbonitrile trans-4'-(4-Pentylcyclohexyl)-4-biphenylcarbonitrile 4'-(trans-4-Propylcyclohexyl)-[1,1'-biphenyl]-4-carbonitrile 4'-Heptyl-4-biphenylcarbonitrile
10CB 4'-Hexyl-4-biphenylcarbonitrile 4-n-Pentylbiphenyl

1of4

4’-pentyl-biphenyl-4-carbonitrile 4-Pentyl-4’-cyanobipheny 4'-PENTYL-4-BIPHENYLCARBONITRILE 99+% 4-N-Pentyl-Biphenylcarbonitrile 4-Pentyl-4'-Cyanobiphenyl,5CbC18H15N 4-n-Amyl-4'-cyanobiphenyl 4'-n-Pentyl-(1,1'-biphenyl)-4-carbonitrile p-n-Amylbenzylidene-p'-cyanoaniline 4-Cyano-4'-N-pentylbiphenyl,98% 4-(4'-Pentylphenyl)benzonitrile 4-PENTYL-4''-4''-PENTYL-4-BIPHENYLCARBONITRILE 4-n-pentyl-4'-cyanobiphenyl 5CB 1-pentyl-4-phenylcyclohexa-2,4-diene-1-carbonitrile 4'-Amyl-4-biphenylcarbonitrile 4-Amyl-4'-cyanobiphenyl 4'-Pentyl-4-biphenylcarbonitrile 4-Cyano-4'-pentybiphenyl 4-penty-4'-cyanobiphenyl 4-cyano-4’-pentyldiphenyl 4'-Pentyl[1,1'-biphenyl]-4-carbonitrile CB5 p-Cyano-p’-pentylbiphenyl RO-CM-5115 [4-(4'-N-PENTYLPHENYL)BENZONITRILE] 4-(4-AMYLPHENYL) BENZONITRILE 4'-N-PENTYLBIPHENYL-4-CARBONITRILE 4-PENTYL-4'-CYANOBIPHENYL 4'-AMYL-4-BIPHENYLCARBONITRILE 4-AMYL-4'-CYANOBIPHENYL 5CB 4-PENTYL-4'-CYANOBIPHENYL 4'-Pentyl-4-biphenylcarbonitrile liquid crystal (neMatic), 98% 4-cyano-4-pentylbipheny 1’-biphenyl]-4-carbonitrile,4’-pentyl-[ 1’-Biphenyl]-4-carbonitrile,4’-pentyl-[1 L-Lysine-diisocyate ethyl ester TIMTEC-BB SBB008542 4-Cyano-4'-pentylbiphenyl > 4'-Pentyl[1,1'-biphenyl]-4-carbonitril 4-Cyano-4'-pentyL Amyl biphenyl nitrile 4-Cyano-4'-n-pentyldiphenyl 4-Cyano-4'-pentylbiphenyl 4'-Pentyl-[1,1'-biphenyl]-4-carbonitrile 4''-Pentyl-4-biphenylcarbonitrile 4-Cyano-4'-n-pentylbiphenyl 4'-pentyl-4'-cyanobiphenyl [1,1'-Biphenyl]-4-carbonitrile,4'-pentyl- 4'-Penttyl-4-biphenylcarbonitrile 4-Cyano-4′-n-pentylbiphenyl, CAS 40817-08-1 Pentyl biphenyl nitrile 4-Cyano-4'-pentylbiphenyl 4'-Pentyl-4-biphenylcarbonitrile 5CB 40817-08-1 CH3CH24C6H4C6H4CN C18H19N Building Blocks for Liquid Crystals Biphenyls (Building Blocks for Liquid Crystals) Liquid Crystals & Related Compounds Cyanobiphenyls & Analogs (Liquid Crystals)