4-bromo-1-methylpyrazole-3-carboxy acid
- CAS No.
- 84547-84-2
- Chemical Name:
- 4-bromo-1-methylpyrazole-3-carboxy acid
- Synonyms
- 4-bromo-1-methylpyrazole-3-carboxy acid;1-Methyl-4-bromopyrazole-5-carboxylic acid;4-bromo-2-methyl-3-pyrazolecarboxylic acid;4-Bromo-2-methylpyrazole-3-carboxylic acid;4-Bromo-1-methylpyrazole-5-carboxylic Acid;1H-Pyrazole-5-carboxylic acid, 4-bromo-1-methyl-;4-bromo-1-methyl-1H-pyrazole-5-carboxylic acid(SALTDATA: FREE)
- CBNumber:
- CB21569904
- Molecular Formula:
- C5H5BrN2O2
- Molecular Weight:
- 205.01
- MDL Number:
- MFCD00463982
- MOL File:
- 84547-84-2.mol
- MSDS File:
- SDS
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
| HazardClass | IRRITANT |
4-bromo-1-methylpyrazole-3-carboxy acid price More Price(39)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | R432725 | 4-BROMO-2-METHYL-2H-PYRAZOLE-3-CARBOXYLIC ACID AldrichCPR | 84547-84-2 | 1 unit | $32.7 | 2026-04-30 | Buy |
| Sigma-Aldrich | R432725 | 4-BROMO-2-METHYL-2H-PYRAZOLE-3-CARBOXYLIC ACID AldrichCPR | 84547-84-2 | 5MG | $29.8 | 2024-03-01 | Buy |
| Matrix Scientific | 027387 | 4-Bromo-1-methyl-1H-pyrazole-5-carboxylic acid | 84547-84-2 | 1.00g | $22 | 2026-05-18 | Buy |
| Matrix Scientific | 027387 | 4-Bromo-1-methyl-1H-pyrazole-5-carboxylic acid | 84547-84-2 | 5.00g | $66 | 2026-05-18 | Buy |
| Matrix Scientific | 027387 | 4-Bromo-1-methyl-1H-pyrazole-5-carboxylic acid | 84547-84-2 | 25.00g | $241 | 2026-05-18 | Buy |
4-bromo-1-methylpyrazole-3-carboxy acid Chemical Properties, Uses, Production
Synthesis
15803-02-8
124-38-9
84547-84-2
1. 600 ml of anhydrous THF was added to a 2L reaction flask under argon protection. 2. 65.4 g of diisopropylamine was added and the reaction system was subsequently cooled to -78 °C via a dry ice acetone bath. 3. 258 ml of 2.5 M n-butyllithium solution was slowly added dropwise at 0 °C. After the dropwise addition, the reaction temperature was raised to 0 °C and maintained for 0.5 h. The reaction system was then cooled to -78 °C again. 4. 80.0 g of 1-methyl-4-bromopyrazole was slowly added dropwise at -78 °C, and after the dropwise addition was completed, the reaction temperature was maintained at -78 °C for 1 hour. 5. dry carbon dioxide gas was passed into the reaction system until TLC detection showed that the reaction was complete. 6. The pH of the reaction solution was slowly adjusted to 2-3 with 1N HCl, at which time a large amount of white solid was precipitated. 7. The reaction mixture was cooled at 0 °C for 3 h, followed by filtration to collect the white solid. 8. The resulting solid was dried at 40 °C for 16 h to give 77.3 g of white solid compound 22 (4-bromo-1-methyl-1H-pyrazole-5-carboxylic acid).
References
[1] Patent: CN108264520, 2018, A. Location in patent: Paragraph 0261; 0262; 0263; 0264; 0265
4-bromo-1-methylpyrazole-3-carboxy acid Preparation Products And Raw materials
Raw materials
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Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Wuhan Chemwish Technology Co., Ltd | 86-027-67849912 | sales@chemwish.com | China | 35884 | 56 |
| Capot Chemical Co., Ltd | +86 (0) 571 85 58 67 18 | China | 18187 | 66 | |
| Wuhan Luohua Medical Technology Co.,Ltd. | 13477084141; 13477084141 | sales@luohuapharm.com | China | 468 | 60 |
| HuiFeiChem(WuXi) PharmaTech Co.,Ltd | 0510-0510-83593305 | sales@huifeichem.com | China | 102 | 62 |
| China Langchem Inc. | 0086-21-58956006 | China | 7798 | 57 | |
| Acorn PharmaTech Co., Ltd. | 025-58395930 | sales@acornpharma.com | China | 982 | 60 |
| Shanghai Synthfine Chemical Co.,Ltd | 15921303235 | sales@synthfine.com | China | 999 | 58 |
| Shanghai Topbiochem Technology Co., Ltd | +86-21-60341587 | sales@topbiochem.com | China | 6166 | 58 |
| 9ding chemical ( Shanghai) Limited | 4009209199 | sales@9dingchem.com | China | 18201 | 56 |
View Latest Price from 4-bromo-1-methylpyrazole-3-carboxy acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2019-07-06 | 4-bromo-1-methylpyrazole-3-carboxy acid
84547-84-2
|
$1.00 | 1KG | 98% | 100KG | Career Henan Chemical Co |
-
- 4-bromo-1-methylpyrazole-3-carboxy acid
84547-84-2
- $1.00
- 98%
- Career Henan Chemical Co
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