Overview
4-Hydroxy-3-nitrocoumarin is a nitrated derivative of coumarin, a benzopyrone compound. It is primarily used as a building block in pharmaceutical and chemical research due to its reactive nitro and hydroxyl functional groups. Its synthesis typically involves nitration of 4-hydroxycoumarin under controlled conditions. The compound is notable for its role in developing fluorescent probes and bioactive molecules. Its structure allows for further functionalization, making it valuable in medicinal chemistry and material science.
Physical and Chemical Properties
The compound appears as a yellow to light brown crystalline powder with moderate solubility in polar organic solvents. It exhibits absorption in the UV-visible spectrum, a characteristic exploited in analytical applications. The nitro group contributes to its reactivity in electrophilic substitution reactions. Thermal stability is limited, with decomposition observed near its melting point. The hydroxyl group enhances solubility in alkaline solutions, forming water-soluble salts. These properties are critical for its utility in synthetic chemistry.
Main Applications
4-Hydroxy-3-nitrocoumarin serves as a key intermediate in synthesizing anticoagulants, fluorescent dyes, and photoactive compounds. Its nitro group facilitates further chemical modifications, such as reduction to amino derivatives for drug development. In research, it is used to study nitroaromatic compound behavior and as a precursor for coumarin-based sensors. Industrial applications include specialty chemicals and agrochemicals, though these are less common due to niche demand.
Safety and Storage
The compound requires careful handling due to potential irritant effects. Personal protective equipment (gloves, goggles, lab coat) is mandatory. Avoid dust formation and store in airtight containers under inert gas if long-term stability is a concern. Storage conditions should prioritize temperature control (below 25°C) and protection from humidity. Incompatible with strong oxidizers and bases. Dispose of waste according to local regulations for nitrated organic compounds.
B2B Procurement Guide
When procuring 4-hydroxy-3-nitrocoumarin, prioritize suppliers with documented quality control processes. Request certificates of analysis (CoA) specifying purity (≥95% by HPLC), residual solvents, and heavy metal content. Bulk purchases (100g+) may offer cost savings but require stability testing. Logistics should ensure temperature-controlled shipping for international orders. Consider suppliers with REACH or FDA compliance if the compound is intended for pharmaceutical use. Sample testing is recommended before large-scale procurement.
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