ChemicalBook > CAS DataBase List > 3-BROMO-5-METHYL-1H-PYRAZOLE
3-BROMO-5-METHYL-1H-PYRAZOLE
Uses- Product Name
- 3-BROMO-5-METHYL-1H-PYRAZOLE
- CAS No.
- 57097-81-1
- Chemical Name
- 3-BROMO-5-METHYL-1H-PYRAZOLE
- Synonyms
- 3-Bromo-5-methylpyrazole;3-BROMO-5-METHYL-1H-PYRAZOLE;3-Bromo-5-methyl-2H-pyrazole;1H-Pyrazole, 3-broMo-5-Methyl-
- CBNumber
- CB92459315
- Molecular Formula
- C4H5BrN2
- Formula Weight
- 161
- MOL File
- 57097-81-1.mol
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3-BROMO-5-METHYL-1H-PYRAZOLE Property
- Melting point:
- 138-139 °C
- Boiling point:
- 270℃
- Density
- 1.723
- Flash point:
- 117℃
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- pka
- 11.44±0.10(Predicted)
- Appearance
- White to off-white Solid
- InChI
- InChI=1S/C4H5BrN2/c1-3-2-4(5)7-6-3/h2H,1H3,(H,6,7)
- InChIKey
- SVRPUGWCOWUQOY-UHFFFAOYSA-N
- SMILES
- BrC1=NNC(=C1)C
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Safety
- HS Code
- 2933199090
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Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
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N-Bromosuccinimide Price
TRC
- Product number
- B697560
- Product name
- 3-Bromo-5-methyl-1H-pyrazole
- Packaging
- 250mg
- Price
- $90
- Updated
- 2021/12/16
TRC
- Product number
- B697560
- Product name
- 3-Bromo-5-methyl-1H-pyrazole
- Packaging
- 1g
- Price
- $250
- Updated
- 2021/12/16
AK Scientific
- Product number
- J98577
- Product name
- 3-Bromo-5-methyl-1Hpyrazole
- Packaging
- 5g
- Price
- $240
- Updated
- 2021/12/16
SynQuest Laboratories
- Product number
- 3H32-9-CU
- Product name
- 3-Bromo-5-methyl-2H-pyrazole
- Purity
- 98%
- Packaging
- 1g
- Price
- $248
- Updated
- 2021/12/16
Biosynth Carbosynth
- Product number
- FB144115
- Product name
- 3-Bromo-5-methyl-1H-pyrazole
- Packaging
- 500mg
- Price
- $150
- Updated
- 2021/12/16
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3-BROMO-5-METHYL-1H-PYRAZOLE Chemical Properties,Usage,Production
Uses
3-Bromo-5-methyl-1H-pyrazole is used to prepare cyclobutanediyls.
Uses
3-Bromo-5-methyl-1H-pyrazole is used to prepare cyclobutanediyls.
Synthesis
31230-17-8
57097-81-1
S2. 1.9 g of 3-amino-5-methyl-1H-pyrazole (2), 15 mL of concentrated hydrobromic acid and 2.8 g of cuprous bromide were added to a 100 mL three-necked flask and heated to 70°C. About 1.5 g of sodium nitrite was dissolved in 5 mL of water and slowly added dropwise to the three-necked flask through a constant pressure funnel. After the dropwise addition was completed, the reaction mixture was stirred at 70°C for 30 minutes. After completion of the reaction, it was cooled to room temperature and 20 ml of tetrahydrofuran (THF) and 20 ml of water were added. The mixture was extracted three times with 30 mL of ethyl acetate. The organic layers were combined, washed with aqueous sodium thiosulfate, dried over anhydrous magnesium sulfate and silica gel filtered. Finally, the solvent was removed by distillation under reduced pressure to give 3-bromo-5-methylpyrazole (3) in 62% yield.
References
[1] Patent: CN104844567, 2017, B. Location in patent: Paragraph 0031; 0035; 0040; 0045
[2] Patent: CN108191822, 2018, A. Location in patent: Paragraph 0059; 0060; 0061
3-BROMO-5-METHYL-1H-PYRAZOLE Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 3-BROMO-5-METHYL-1H-PYRAZOLE manufacturers
Hubei Lidu New Material Technology Co., Ltd
- Product
- 3-broMo-5-Methyl-1H-pyrazole 57097-81-1
- Price
- US $0.00-0.00/G
- Min. Order
- 1G
- Purity
- 98%
- Supply Ability
- 20TONS
- Release date
- 2025-11-03
Zibo Hangyu Biotechnology Development Co., Ltd
- Product
- 3-BROMO-5-METHYL-1H-PYRAZOLE 57097-81-1
- Price
- US $125.00-975.00/g
- Min. Order
- 5g
- Purity
- 99%
- Supply Ability
- 50
- Release date
- 2024-07-12
Career Henan Chemical Co
- Product
- 3-BROMO-5-METHYL-1H-PYRAZOLE 57097-81-1
- Price
- US $5.50/KG
- Min. Order
- 1KG
- Purity
- 98%min
- Supply Ability
- 1kg-100kg
- Release date
- 2020-01-14
57097-81-1, 3-BROMO-5-METHYL-1H-PYRAZOLERelated Search:
3-bromo-5-ethynylpyridine
4-AMINO-5-BROMO-3-METHYLPYRIDINE
1H-INDOLE, 3-BROMO-5-METHOXY-
Pyridine, 3-bromo-5-ethyl- (9CI)
3-BROMO-5-METHOXYINDOLE-1-CARBOXYLIC ACID TERT-BUTYL ESTER
3-BroMo-5-Methoxy-2-Methylpyridine
1H-INDOLE, 3-BROMO-5-CHLORO-
Ethyl 3-broMo-5-chloroisonicotinate
3-BROMO-5-ISOXAZOLECARBOXALDEHYDE
3-Bromo-5-chloroisonicotinaldehyde
3-BroMo-5-chloro-4-Methylpyridine
3-bromo-1H-indazole-5-carbonitrile
3-BROMO-5-CHLOROPYRAZOLO[1,5-A]PYRIMIDINE
3-BroMo-5-Methoxyquinoline