Chemical Identity and Structure

6-Bromo-7-fluoro-1H-indazole belongs to the indazole family of bicyclic heterocycles, composed of a benzene ring fused to a pyrazole ring. The parent 1H-indazole scaffold contains two nitrogen atoms at positions 1 and 2 of the five-membered ring. In this derivative, a bromine atom is installed at the 6-position and a fluorine atom at the 7-position of the benzo ring, creating an electronically and sterically differentiated platform for further functionalization.

The simultaneous presence of bromine and fluorine on adjacent ring positions is particularly valuable: the C–Br bond is amenable to a wide range of transition-metal-catalyzed cross-coupling reactions (e.g., Suzuki–Miyaura, Buchwald–Hartwig), while the C–F bond modulates electronic density, lipophilicity (log P), and metabolic stability of downstream drug candidates. The NH tautomer (1H-form) also provides a handle for N-alkylation or N-protection strategies.

Synthetic Utility and Applications

As a dual-halogenated indazole, 6-Bromo-7-fluoro-1H-indazole serves as a highly versatile building block in pharmaceutical and agrochemical research. Key synthetic applications include:

• Cross-coupling reactions: The C6–Br bond undergoes Suzuki–Miyaura, Negishi, Sonogashira, and Buchwald–Hartwig couplings to introduce aryl, heteroaryl, alkynyl, amino, and other functional groups with high selectivity.
• Fragment-based drug design: The compact indazole core with defined halogen substitution enables rapid generation of structurally diverse analogue libraries via parallel synthesis.
• Fluorine-directed biological profiling: The 7-fluoro group enhances binding affinity through dipole interactions and can influence NH acidity, affecting pKa and protein-binding characteristics of target molecules.
• Further heterocycle elaboration: The NH group may be selectively alkylated or acylated prior to or following cross-coupling steps, allowing access to 1-substituted and 2-substituted indazole products.

Researchers engaged in kinase inhibitor programs, GPCR ligand design, or central nervous system (CNS) drug discovery frequently employ halogenated indazoles as privileged scaffolds due to their metabolic stability and tunable physicochemical properties.

Handling, Storage, and Safety Guidelines

Although 6-Bromo-7-fluoro-1H-indazole is a research reagent rather than a bulk industrial chemical, standard laboratory precautions for halogenated organic compounds should be observed:

• Personal protective equipment (PPE): Wear nitrile gloves, safety goggles, and a laboratory coat when weighing or handling the compound. Use a fume hood for any operations generating dust or aerosols.
• Storage: Store in a tightly sealed container in a cool (15–25 °C), dry, and well-ventilated area, away from direct light and moisture. Protect from incompatible materials such as strong oxidizing agents and strong bases.
• Stability: The compound is expected to be stable under recommended storage conditions. Avoid prolonged exposure to air and humidity, which may lead to gradual decomposition.
• Disposal: Dispose of waste material in accordance with local regulations for halogenated organic compounds. Do not pour down the drain.
• First aid: In case of skin or eye contact, flush thoroughly with water. If inhaled or ingested, seek medical attention immediately and consult the Safety Data Sheet (SDS).

Always consult the current Safety Data Sheet (SDS) provided by Aladdin Scientific before use.

Quality, Purity, and Procurement

Aladdin Scientific supplies 6-Bromo-7-fluoro-1H-indazole (SKU: B587221) as a research-grade reagent. Customers should note the following when procuring and qualifying this compound:

• Purity verification: Upon receipt, identity and purity can be confirmed by ¹H NMR, ¹³C NMR, HPLC, and high-resolution mass spectrometry (HRMS). Certificates of Analysis (CoA) are available from Aladdin Scientific upon request.
• Lot-to-lot consistency: For reproducibility-sensitive applications such as biological screening, request CoA data for each lot and compare against reference spectra.
• Packaging: Available in quantities suitable for discovery research. Contact Aladdin Scientific for custom quantities or bulk inquiries.
• Regulatory compliance: Verify any import/export regulations applicable to brominated and fluorinated organic compounds in your jurisdiction prior to ordering.