ChemicalBook > CAS DataBase List > 4-Bromo-1-methylpyrazole

4-Bromo-1-methylpyrazole

Product Name
4-Bromo-1-methylpyrazole
CAS No.
15803-02-8
Chemical Name
4-Bromo-1-methylpyrazole
Synonyms
4-BROMO-1-METHYL-1H-PYRAZOLE;4-Bromo-1-methylpyrazole;4-Bromo-1-Methyl-1-Pyrazol;1--4- MethylbroMidepyrazole;cyclopent-1-enecarbaldehyde;1-Methyl-4-bromo-1H-pyrazole;4-Bromo-1-methylpyrazole >1- Methyl-4- broMinepyrazole;1-Mehtyl-4-Bromo-1H-Pyrazole;4-broMo-1-Methyl-1H-pyraz...
CBNumber
CB8702674
Molecular Formula
C4H5BrN2
Formula Weight
161
MOL File
15803-02-8.mol
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4-Bromo-1-methylpyrazole Property

Boiling point:
185-188°C
Density 
1.558
refractive index 
n20/D 1.531
Flash point:
93°C
storage temp. 
Sealed in dry,Room Temperature
form 
Liquid
pka
0.21±0.10(Predicted)
color 
Colorless to pale yellow
InChI
InChI=1S/C4H5BrN2/c1-7-3-4(5)2-6-7/h2-3H,1H3
InChIKey
IXJSDKIJPVSPKF-UHFFFAOYSA-N
SMILES
N1(C)C=C(Br)C=N1
CAS DataBase Reference
15803-02-8(CAS DataBase Reference)
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Safety

Hazard Codes 
Xi
Risk Statements 
37/38-41
Safety Statements 
26-39
RIDADR 
UN1760
WGK Germany 
3
HazardClass 
IRRITANT
HS Code 
29331990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H315Causes skin irritation

H318Causes serious eye damage

H335May cause respiratory irritation

Precautionary statements

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

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

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
696455
Product name
4-Bromo-1-methyl-1H-pyrazole
Purity
97%
Packaging
5g
Price
$39.5
Updated
2024/03/01
Sigma-Aldrich
Product number
696455
Product name
4-Bromo-1-methyl-1H-pyrazole
Purity
97%
Packaging
25g
Price
$138
Updated
2024/03/01
TCI Chemical
Product number
B4060
Product name
4-Bromo-1-methylpyrazole
Purity
>98.0%(GC)
Packaging
5g
Price
$17
Updated
2024/03/01
TCI Chemical
Product number
B4060
Product name
4-Bromo-1-methylpyrazole
Purity
>98.0%(GC)
Packaging
25g
Price
$53
Updated
2024/03/01
Alfa Aesar
Product number
H64768
Product name
4-Bromo-1-methyl-1H-pyrazole, 98+%
Packaging
25g
Price
$52.65
Updated
2024/03/01
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4-Bromo-1-methylpyrazole Chemical Properties,Usage,Production

Uses

4-Bromo-1-methylpyrazole is a colourless or light yellow liquid at room temperature and pressure. It can be used as an intermediate in organic synthesis. It has good solubility in common organic solvents such as ethyl acetate, dichloromethane, dimethyl sulfoxide, and N, N-dimethylformamide but poor solubility in water.

Synthesis

The conventional synthesis method of 4-Bromo-1-methylpyrazole starts from methyl pyrazole and uses NBS to brominate the carbon atom at position 4 in pyrazole using water as a solvent to obtain the target product. This synthetic route is fast and simple, with high yield and convenient post-processing. It is worth noting that the boiling point of this compound is not high, and low-temperature concentration should be paid attention to during post-processing. In addition, there is also a synthetic method using liquid bromine and hydrobromic acid aqueous solution as bromination reagents.

4-Bromo-1-methylpyrazole Preparation Products And Raw materials

Raw materials

Preparation Products

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4-Bromo-1-methylpyrazole Suppliers

Americas 1 Belgium 1 Canada 1 CHINA 272 Europe 1 France 1 Germany 2 India 42 Japan 4 Switzerland 3 Ukraine 1 United Kingdom 10 United States 42 Global 381
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View Lastest Price from 4-Bromo-1-methylpyrazole manufacturers

PUSHAN INDUSTRIAL (SHAANXI) CO.,LTD
Product
4-Bromo-1-methylpyrazole 15803-02-8
Price
US $0.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
2 MTs
Release date
2024-08-06
Suzhou Nordica Biopharma CO.,LTD
Product
4-bromo-1-methyl-1H-pyrazole 15803-02-8
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
1 tons
Release date
2024-11-15
Hebei Weibang Biotechnology Co., Ltd
Product
4-Bromo-1-methylpyrazole 15803-02-8
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-10-30

15803-02-8, 4-Bromo-1-methylpyrazoleRelated Search:

1H-1,2,3-TRIAZOLE, 4-BROMO-1-METHYL- 3-(3-AMINOPHENYL)-4-BROMO-1-METHYLPYRAZOLE 4-BROMO-1-METHYLPYRAZOLE-5-CARBOXALDEHYDE,4-BROMO-1-METHYLPYRAZOLE-3-CARBOXALDEHYDE ETHYL 2-(4-BROMO-3,5-DIMETHYL-1H-PYRAZOL-1-YL)ACETATE 4-Bromo-1,3,5-trimethyl-1H-pyrazole 5-[(4-BROMO-3,5-DIMETHYL-1H-PYRAZOL-1-YL)METHYL]-1,3,4-OXADIAZOLE-2-THIOL 3-AMINO-4-BROMO-1-METHYLPYRAZOLE, 97+%,5-AMINO-4-BROMO-1-METHYLPYRAZOLE,3-AMINO-4-BROMO-2-METHYLPYRAZOLE 3-AMINO-4-BROMO-1-METHYLPYRAZOLE 5-AMINO-4-BROMO-3-METHYLPYRAZOLE HYDROBROMIDE,6-AMINO-3-BROMO-2-METHYLPYRAZOLE HYDROBROMIDE 4-BROMO-1-METHYLPYRAZOLE-5-CARBOXALDEHYDE 4-Bromo-3,5-dimethylpyrazole 4-BROMO-3-METHYLPYRAZOLE,4-Bromo-3-methylpyrazole,97%,4-BROMO-3-METHYLPYRAZOLE 97% 3-Bromo-1-methylpyrazole 4-Bromopyrazole 3,4,5-TRIBROMO-1-(4-NITROPHENYL)-1H-PYRAZOLE METHYL 3-[(4-BROMO-3,5-DIMETHYL-1H-PYRAZOL-1-YL)METHYL]BENZOATE 3-(4-BROMO-3,5-DIMETHYL-PYRAZOL-1-YLMETHYL)-BENZOIC ACID 3-(4-AMINOPHENYL)-4-BROMO-1-METHYLPYRAZOLE

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  • ISOPROPYL LAURATE 10233-13-3
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  • C4H5BrN
  • Organohalides
  • Pyrazole
  • CHIRAL CHEMICALS
  • Pyrazoles & Triazoles
  • Boronic Acid
  • Heterocyclic Compounds
  • Halides
  • Pyrazoles & Triazoles
  • Azoles
  • blocks
  • Bromides