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Shanghai Raise Chemical Technology Co.,Ltd
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15026594951 |
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rs@raise-chem.com |
| Products Intro: |
Product Name:4,5-Dibromo-3-methylthiophene-2-carboxylic acid
CAS:854626-32-7
Purity:97% HPLC Package:1g;5g
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| Company Name: |
BePharm Ltd
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| Tel: |
400-685-9117 |
| Email: |
market@bepharm.com |
| Products Intro: |
Product Name:4,5-Dibromo-3-methylthiophene-2-carboxylic acid
CAS:854626-32-7
Purity:98% Package:4080RMB/1g
|
| Company Name: |
Aikon International Limited
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| Tel: |
025-58859352 18068836627 |
| Email: |
sales01@aikonchem.com |
| Products Intro: |
Product Name:4,5-Dibromo-3-methylthiophene-2-carboxylic acid
CAS:854626-32-7
Purity:95+% Package:1g;5g;10g
|
| Company Name: |
Suzhou Rovathin Foreign Trade Co.,Ltd
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| Tel: |
0512-65816829 18662214788 |
| Email: |
info@rovathin.com.cn |
| Products Intro: |
Product Name:4,5-dibromo-3-methyl-2-Thiophenecarboxylic acid
CAS:854626-32-7
Purity:95% Package:1g;10g;100g; 1kg
|
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| | 4,5-Dibromo-3-methylthiophene-2-carboxylic acid Basic information |
| | 4,5-Dibromo-3-methylthiophene-2-carboxylic acid Chemical Properties |
| Melting point | 225-226 °C | | Boiling point | 369.8±42.0 °C(Predicted) | | density | 2.141±0.06 g/cm3(Predicted) | | storage temp. | under inert gas (nitrogen or Argon) at 2–8 °C | | pka | 3.48±0.10(Predicted) |
| | 4,5-Dibromo-3-methylthiophene-2-carboxylic acid Usage And Synthesis |
| Preparation | 4,5-Dibromo-3-methyl-2-thiophenecarboxylic acid synthesis: 4,5-dibromo-3-methyl-2-thiophenecarbonitrile (26.2 g, 92.2 mmol), EtOH (175 mL), water (175 mL), and NaOH (18.6 g, 466 mmol) were stirred together at 80°C for 1 h. The solvent was removed, the solids were collected by filtration, dissolved in water, and washed with CH2Cl2. The water layer was acidified with 37% HCl, the white solid was collected by filtration and dried under vacuum at 60°C to give 25.9 g (94% wt.) of 4,5-dibromo-3-methyl-2-thiophenecarboxylic acid: m.p. 225-226°C; 1H NMR (CDCl3) 2.5 (s). |
| | 4,5-Dibromo-3-methylthiophene-2-carboxylic acid Preparation Products And Raw materials |
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