ChemicalBook > CAS DataBase List > 4-Chloropyrazole

4-Chloropyrazole

Product Name: 4-Chloropyrazole
CAS No.: 15878-00-9
Chemical Name: 4-Chloropyrazole
Synonyms: AKOS B001464;4-clopyrazole;4-chloro-pyrazol;4-CHLOROPYRAZOLE;VITAS-BB TBB000653;ART-CHEM-BB B001464;4-chloro-1h-pyrazol;PYRAZOLE, 4-CHLORO-;4-CHLORO-1H-PYRAZOLE;4-Chloropyrazole >
CBNumber: CB2212438
Molecular Formula: C3H3ClN2
Formula Weight: 102.52
MOL File: 15878-00-9.mol

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4-Chloropyrazole Property

Melting point:: 75-76 ºC
Boiling point:: 220 ºC
Density: 1.405
Flash point:: 99 ºC
storage temp.: Keep in dark place,Sealed in dry,Room Temperature
form: powder to crystal
pka: 12.71±0.50(Predicted)
color: White to Almost white
λmax: 224nm(lit.)
InChI: InChI=1S/C3H3ClN2/c4-3-1-5-6-2-3/h1-2H,(H,5,6)
InChIKey: BADSZRMNXWLUKO-UHFFFAOYSA-N
SMILES: N1C=C(Cl)C=N1
CAS DataBase Reference: 15878-00-9(CAS DataBase Reference)

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Safety

Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-22
Safety Statements: 26-36/37/39
RTECS: UQ6445000
HazardClass: IRRITANT
HS Code: 2933199090

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H317May cause an allergic skin reaction

H319Causes serious eye irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: CDS019988
Product name: 4-Chloro-1H-pyrazole
Purity: AldrichCPR
Packaging: 100mg
Price: $70.9
Updated: 2024/03/01

TCI Chemical

Product number: C2888
Product name: 4-Chloropyrazole
Purity: >98.0%(GC)
Packaging: 5g
Price: $28
Updated: 2025/07/31

TCI Chemical

Product number: C2888
Product name: 4-Chloropyrazole
Purity: >98.0%(GC)
Packaging: 25g
Price: $111
Updated: 2025/07/31

TRC

Product number: B418633
Product name: 4-Chloro-1H-pyrazole
Packaging: 10mg
Price: $45
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC32604
Product name: 4-Chloro pyrazole
Packaging: 25g
Price: $60
Updated: 2021/12/16

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4-Chloropyrazole Chemical Properties,Usage,Production

Chemical Properties

White to light yellow crystalline powder

Synthesis

288-13-1

15878-00-9

General method: synthesis of 1-benzyl-4-chloro-3,5-dimethyl-1H-pyrazole. To a 16 mL reaction vial containing 1-benzyl-3,5-dimethyl-1H-pyrazole (196 mg, 1.05 mmol) and a magnetic stirrer, 0.7 mL of water and 0.3 mL of ethyl acetate were added sequentially. Subsequently, sodium chloride (123 mg, 2 mmol) was added and the reaction flask was placed in a room temperature water bath to control the exothermic nature of the reaction. Next, Oxone (322 mg, 0.52 mmol KHSO5) was added and the reaction vial was sealed. The reaction was carried out under continuous vigorous stirring until thin layer chromatography (TLC) analysis (1 h) showed complete consumption of the feedstock. The remaining oxidant was reduced by addition of solid sodium bisulfite until starch iodide paper tested negative. The reaction mixture was diluted with water (5 mL) and extracted with a 1:1 hexane/ether solvent mixture (3 x 5 mL). The organic phases were combined, dried with anhydrous magnesium sulfate and concentrated under reduced pressure to give the crude product. The crude product was purified by fast column chromatography (14×1 cm, eluent 9:1 hexane/ethyl acetate) to afford pure 1-benzyl-4-chloro-3,5-dimethyl-1H-pyrazole as a light yellow oil (215 mg, 93% yield).

References

[1] Canadian Journal of Chemistry, 1991, vol. 69, # 3, p. 432 - 439
[2] Journal of Heterocyclic Chemistry, 2014, vol. 51, # 6, p. 1621 - 1627
[3] Tetrahedron Letters, 2017, vol. 58, # 43, p. 4111 - 4114
[4] Advanced Synthesis and Catalysis, 2013, vol. 355, # 2-3, p. 499 - 507
[5] Angewandte Chemie - International Edition, 2016, vol. 55, # 52, p. 16132 - 16135

4-Chloropyrazole Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 4-Chloropyrazole manufacturers

Hebei Chuanghai Biotechnology Co., Ltd

Product: 4-Chloropyrazole 15878-00-9
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 500000kg
Release date: 2024-10-30

Hebei Chuanghai Biotechnology Co,.LTD

Product: 4-Chloropyrazole 15878-00-9
Price: US $10.70/kg
Min. Order: 10kg
Purity: 99%
Supply Ability: 10000kg
Release date: 2024-08-23

Henan Fengda Chemical Co., Ltd

Product: 4-Chloropyrazole 15878-00-9
Price: US $6.00-0.90/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: g-kg-tons, free sample is available
Release date: 2024-01-24

15878-00-9, 4-ChloropyrazoleRelated Search:

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VITAS-BB TBB000653

AKOS B001464

4-CHLORO-1H-PYRAZOLE

4-CHLOROPYRAZOLE

4-chloro-1h-pyrazol

ART-CHEM-BB B001464

4-chloro-pyrazol

1H-Pyrazole, 4-chloro-

4-chloro-1H-pyrazole(SALTDATA: FREE)

PYRAZOLE, 4-CHLORO-

4 - chlorine pyrazole

1H-Pyrazole, 4-chloro- (9CI)

4-Chloropyrazole &gt

4-clopyrazole

15878-00-9

john's