Overview
5-Fluoroisatin is a fluorinated derivative of isatin, a heterocyclic compound with significant applications in pharmaceuticals and agrochemicals. Its structure features a fluorine atom at the 5-position, enhancing its reactivity and utility in synthesis. The compound is widely recognized for its role as an intermediate in drug development, particularly in the creation of biologically active molecules. Due to its unique chemical properties, 5-fluoroisatin is often employed in medicinal chemistry to modify drug candidates, improving their efficacy or pharmacokinetics. The compound's versatility also extends to agrochemical research, where it serves as a building block for novel pesticides and herbicides.
Physical and Chemical Properties
5-Fluoroisatin appears as a yellow to orange crystalline powder with a melting point ranging between 250-255°C. It is soluble in polar organic solvents such as dimethyl sulfoxide (DMSO) and methanol but exhibits limited solubility in water. The fluorine substitution at the 5-position influences its electronic properties, making it more reactive than non-fluorinated isatin derivatives. The molecular weight of 5-fluoroisatin is 165.12 g/mol, and its stability under standard conditions makes it suitable for laboratory and industrial use. However, it should be stored away from moisture and light to prevent degradation. The compound's reactivity is leveraged in various synthetic pathways, particularly in the formation of heterocyclic frameworks.
Main Applications
5-Fluoroisatin is primarily utilized in the pharmaceutical industry as an intermediate for the synthesis of active pharmaceutical ingredients (APIs). Its fluorinated structure is valuable in designing drugs with enhanced metabolic stability and target specificity. Researchers frequently incorporate it into molecules intended for anticancer, antiviral, and antimicrobial applications. In addition to pharmaceuticals, 5-fluoroisatin finds use in agrochemical research. It serves as a precursor for developing fluorinated pesticides and herbicides, which often exhibit improved efficacy and environmental profiles. The compound's role in organic synthesis extends to academic research, where it is employed to explore novel chemical reactions and pathways.
Safety and Storage
Handling 5-fluoroisatin requires standard laboratory safety precautions, including the use of gloves, goggles, and protective clothing. The compound should be used in a well-ventilated area to avoid inhalation of dust. While it is not classified as highly hazardous, prolonged exposure or ingestion should be avoided. Storage conditions for 5-fluoroisatin include keeping it in a tightly sealed container in a cool, dry place, away from direct light and moisture. Proper labeling and segregation from incompatible chemicals, such as strong oxidizing agents, are essential to maintain its stability and prevent accidental reactions.
B2B Procurement Guide
When procuring 5-fluoroisatin, buyers should prioritize suppliers who provide detailed certificates of analysis (CoA) to verify purity and composition. Pharmaceutical-grade suppliers are often preferred due to stricter quality controls. The reference price ranges between $50-$200 per gram, depending on purity and order volume. Key procurement considerations include confirming the CAS number (443-69-6) and ensuring the material meets specific application requirements, such as synthesis or research use. Bulk purchases may offer cost advantages, but storage capacity and shelf-life should be evaluated. Establishing relationships with reputable manufacturers can ensure consistent supply and quality.
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