3-Bromo-7-nitro-1H-indazole(CAS: 74209-34-0)

3-Bromo-7-nitro-1H-indazole (CAS: 74209-34-0) is a crystalline solid with a molecular weight of approximately 271.03 g/mol. It has a low solubility in water but is soluble in common organic solvents like methanol and dimethylformamide. Chemically, it is reactive towards nucleophiles and reducing agents. It exhibits good stability under normal conditions but should be stored in a dry environment to avoid hydrolysis.

3-Bromo-7-nitro-1H-indazole is typically synthesized via bromination and nitration of indazole. Common methods involve reacting indazole with bromine in the presence of a phase transfer catalyst, followed by nitration using a nitric acid/sulphuric acid mixture. The product is purified by recrystallization from suitable solvents, ensuring high yield and selectivity.

3-Bromo-7-nitro-1H-indazole (CAS: 74209-34-0) is primarily used in the pharmaceutical industry for the development of new drugs. It also finds applications in the synthesis of organic semiconductors and as a reagent in polymer chemistry. Its unique chemical structure makes it valuable for research in materials science and sensor technologies.

When handling 3-Bromo-7-nitro-1H-indazole (CAS: 74209-34-0), it is essential to wear appropriate personal protective equipment (PPE) including gloves, goggles, and a lab coat. Work should be conducted in a fume hood due to its potential volatility and reactivity. Proper spill handling procedures should be in place, and any unused material should be disposed of according to local regulations. Always refer to the Safety Data Sheet (SDS) for detailed safety information.