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3-BROMO-1H-PYRAZOLE

Product Name
3-BROMO-1H-PYRAZOLE
CAS No.
14521-80-3
Chemical Name
3-BROMO-1H-PYRAZOLE
Synonyms
3-Bromopyrazole 97%;MFCD13189492;3-BROMO-PYRAZOLE;3-BROMO-1H-PYRAZOLE;3-bromo-2H-pyrazole;1H-PYRAZOLE, 3-BROMO-;1H-Pyrazole,3-bromo-(9CI);3-Bromo-1H-Pyrazole(WX900043);3-Bromopyrazole/3-broMo-1H-pyrazole
CBNumber
CB1121665
Molecular Formula
C3H3BrN2
Formula Weight
146.97
MOL File
14521-80-3.mol
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3-BROMO-1H-PYRAZOLE Property

Melting point:
60-65°C
Boiling point:
70-72 °C(Press: 0.1 Torr)
Density 
1.904±0.06 g/cm3(Predicted)
storage temp. 
-20°C
form 
crystals
pka
10.88±0.10(Predicted)
color 
White-pale yellow
InChI
InChI=1S/C3H3BrN2/c4-3-1-2-5-6-3/h1-2H,(H,5,6)
InChIKey
XHZWFUVEKDDQPF-UHFFFAOYSA-N
SMILES
N1C=CC(Br)=N1
CAS DataBase Reference
14521-80-3
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Safety

Hazard Codes 
Xn
Risk Statements 
22-36/37/38
Safety Statements 
26-37/39
WGK Germany 
1
HS Code 
2933119000
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

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
723924
Product name
3-Bromopyrazole
Purity
97%
Packaging
1g
Price
$170
Updated
2025/07/31
Sigma-Aldrich
Product number
723924
Product name
3-Bromopyrazole
Purity
97%
Packaging
500mg
Price
$123
Updated
2023/06/20
TRC
Product number
B687345
Product name
3-Bromopyrazole
Packaging
1g
Price
$45
Updated
2021/12/16
Matrix Scientific
Product number
067227
Product name
3-Bromopyrazole
Purity
97%
Packaging
1g
Price
$49
Updated
2021/12/16
Frontier Specialty Chemicals
Product number
CAPOB13736
Product name
3-Bromo-1H-pyrazole
Purity
95%
Packaging
1g
Price
$50
Updated
2021/12/16
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3-BROMO-1H-PYRAZOLE Chemical Properties,Usage,Production

Uses

3-Bromopyrazole is a useful synthetic intermediate in the synthesis of Rynaxypyr (C325380); an insecticidal anthranilic diamide that acts as a potent and selective ryanodine receptor activator.

Synthesis

500011-84-7

14521-80-3

General procedure for the synthesis of 3-bromopyrazole from 1-(dimethylaminosulfonyl)-3-bromopyrazole: 3-bromo-N,N-dimethyl-1H-pyrazole-1-sulfonamide (5.83 g) obtained in step B was mixed with trifluoroacetic acid (9.0 mL) and the reaction was stirred for 2 hours at room temperature. Upon completion of the reaction, ethyl acetate was added to the mixture, followed by neutralization of the reaction solution with saturated aqueous sodium bicarbonate and washing with saturated aqueous sodium chloride. The organic layer was separated, dried with anhydrous sodium sulfate and concentrated under reduced pressure to remove the solvent. The resulting crude product was purified by silica gel column chromatography (eluent: ethyl acetate/hexane) to give the final target compound 3-bromopyrazole (2.92 g). The product was characterized by 1H NMR (400 MHz, CDCl3): δ 6.37 (1H, d, J=2.4 Hz), 7.57 (1H, d, J=2.4 Hz).

References

[1] Patent: WO2006/68669, 2006, A1. Location in patent: Page/Page column 19; 24
[2] Patent: WO2003/106427, 2003, A2. Location in patent: Page 18
[3] Patent: WO2004/11447, 2004, A2. Location in patent: Page 42-43
[4] Patent: EP2818473, 2014, A1. Location in patent: Paragraph 0583
[5] Patent: US9113630, 2015, B2. Location in patent: Page/Page column 41; 42

3-BROMO-1H-PYRAZOLE Preparation Products And Raw materials

Raw materials

Preparation Products

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3-BROMO-1H-PYRAZOLE Suppliers

Specs
Tel
--
Fax
--
Email
info@specs.net
Country
The Netherlands
ProdList
6833
Advantage
70
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View Lastest Price from 3-BROMO-1H-PYRAZOLE manufacturers

Hebei Chuanghai Biotechnology Co., Ltd
Product
3-BROMO-1H-PYRAZOLE 14521-80-3
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-11-18
Shaanxi Dideu Medichem Co. Ltd
Product
3-Bromo-1H-pyrazole 14521-80-3
Price
US $130.00-850.00/g
Min. Order
1g
Purity
99.2%
Supply Ability
20tons
Release date
2019-12-31
Hebei Zhanyao Biotechnology Co. Ltd
Product
3-BROMO-1H-PYRAZOLE 14521-80-3
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20 tons
Release date
2021-10-19