1678-49-5
3-Bromo-4-Nitropyridine N-Oxide
CAS: 1678-49-5
Molecular Formula: C5H3BrN2O3
1678-49-5 - Names and Identifiers
| Name | 3-Bromo-4-Nitropyridine N-Oxide |
| Synonyms | AURORA 23192 3-Bromo-4-nitropyridine 1... 3-Bromo-4-Nitropyridine N-Oxide 3-BROMO-4-NITROPYRIDINE 1-OXIDE 3-Bromo-4-Nitropyridine 1-Oxide 3-BROMO-4-NITROPYRIDINE N-OXIDE 4-nitro-3-bromo pyridine N-oxide Pyridine, 3-bromo-4-nitro-, 1-oxide |
| CAS | 1678-49-5 |
| InChI | InChI=1/C5H3BrN2O3/c6-4-3-7(9)2-1-5(4)8(10)11/h1-3H |
1678-49-5 - Physico-chemical Properties
| Molecular Formula | C5H3BrN2O3 |
| Molar Mass | 218.99 |
| Density | 1.98±0.1 g/cm3(Predicted) |
| Melting Point | 152-154°C |
| Boling Point | 393.0±22.0 °C(Predicted) |
| Flash Point | 191.5°C |
| Water Solubility | Sparingly Soluble in water (0.92 g/L at 25°C). |
| Vapor Presure | 4.99E-06mmHg at 25°C |
| Appearance | Yellow crystalline powder |
| BRN | 150822 |
| pKa | -2.19±0.10(Predicted) |
| Storage Condition | 2-8℃ |
| Refractive Index | 1.666 |
| MDL | MFCD00085925 |
1678-49-5 - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| Packing Group | III |
1678-49-5 - Introduction
3-Bromo-4-Nitropyridine N-Oxide, chemical formula C5H3BrN2O3, also known as BNP-N-oxide, is an organic compound.
Its properties are as follows:
1. Appearance: White to light yellow crystalline solid.
2. Melting Point: about 120-124 ° C.
3. Solubility: Slightly soluble in water, soluble in organic solvents such as ethanol and dimethyl sulfoxide.
Its main uses are:
1. BNP-N-oxide can be used as an efficient and selective oxidant for oxidation reactions in organic synthesis.
2. It can be used as an important intermediate for the synthesis of other organic compounds.
3. It is also used in the field of medicine, for example, as a synthetic intermediate for certain drugs.
There are generally two methods for preparing BNP-N-oxide:
1. From 3-bromo-4-nitropyridine, it can be obtained by N-oxidation reaction using an oxidizing agent such as hydrogen peroxide or peroxyacetic acid.
2. Another method is to start from the iodide or selenate of 3-bromo-4-nitropyridine and first perform a chemical reaction to obtain the corresponding nitropyridine derivative, this is followed by N-oxidation with hydrogen peroxide to give a BNP-N-oxide.
For safety information, please note the following:
1. BNP-N-oxide may be irritating and toxic to the human body. Pay attention to personal protection when exposed and maintain good ventilation conditions.
2. In the process of use, should follow the general practice of chemicals, avoid contact with skin, eyes and respiratory tract.
3. In case of accidental contact or accidental exposure, rinse immediately with plenty of water and seek medical treatment in time.
4. Avoid contact with flammable substances, storage should be away from fire.
The most important thing is to strictly abide by the safe operation of chemicals during use, and handle them correctly and safely according to the specific situation.
Its properties are as follows:
1. Appearance: White to light yellow crystalline solid.
2. Melting Point: about 120-124 ° C.
3. Solubility: Slightly soluble in water, soluble in organic solvents such as ethanol and dimethyl sulfoxide.
Its main uses are:
1. BNP-N-oxide can be used as an efficient and selective oxidant for oxidation reactions in organic synthesis.
2. It can be used as an important intermediate for the synthesis of other organic compounds.
3. It is also used in the field of medicine, for example, as a synthetic intermediate for certain drugs.
There are generally two methods for preparing BNP-N-oxide:
1. From 3-bromo-4-nitropyridine, it can be obtained by N-oxidation reaction using an oxidizing agent such as hydrogen peroxide or peroxyacetic acid.
2. Another method is to start from the iodide or selenate of 3-bromo-4-nitropyridine and first perform a chemical reaction to obtain the corresponding nitropyridine derivative, this is followed by N-oxidation with hydrogen peroxide to give a BNP-N-oxide.
For safety information, please note the following:
1. BNP-N-oxide may be irritating and toxic to the human body. Pay attention to personal protection when exposed and maintain good ventilation conditions.
2. In the process of use, should follow the general practice of chemicals, avoid contact with skin, eyes and respiratory tract.
3. In case of accidental contact or accidental exposure, rinse immediately with plenty of water and seek medical treatment in time.
4. Avoid contact with flammable substances, storage should be away from fire.
The most important thing is to strictly abide by the safe operation of chemicals during use, and handle them correctly and safely according to the specific situation.
Last Update：2024-04-09 15:17:53
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CAS: 1678-49-5
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CAS: 1678-49-5
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