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4-Amino-3-chlorophenol hydrochloride (C₆H₇ClNO·HCl) is a chlorinated aromatic compound featuring an amino group at position 4, a chlorine at position 3, and a phenolic hydroxyl group, stabilized as its hydrochloride salt. It is primarily used as a chemical intermediate in pharmaceutical manufacturing—helping synthesize antibiotics, antifungals, and pain relievers. It also plays a key role in dye production, especially azo dyes and oxidative hair colorants, due to its reactivity in diazotization and coupling reactions. Additionally, it serves in the development of agrochemicals like herbicides and fungicides. While not used directly in consumer products, its versatile structure makes it valuable in organic synthesis and research. The hydrochloride form improves stability and solubility but requires careful handling due to potential skin irritation or toxicity. Always used under controlled industrial or laboratory conditions.
4-Amino-3-chlorophenol hydrochloride is a chlorinated aromatic compound with the chemical formula C₆H₇ClNO·HCl. It consists of a phenol ring (hydroxybenzene) substituted with an amino group (–NH₂) at position 4 and a chlorine atom at position 3, and it is stabilized as its hydrochloride salt for improved solubility and stability.
Key Uses:
Pharmaceutical Intermediate:
Widely used in synthesizing drugs, especially antibacterials, antifungals, and analgesics. Its functional groups allow further chemical modifications to build complex active molecules.
Dye and Pigment Manufacturing:
Serves as a precursor in azo dyes and hair colorants due to its ability to undergo diazotization and coupling reactions—common in color chemistry.
Agrochemical Synthesis:
Used to produce certain herbicides and fungicides where chlorinated aniline derivatives are required.
Chemical Research:
Employed as a building block in organic synthesis and material science, including the development of sensors or polymers.
Note: The hydrochloride form enhances shelf life and handling but may be corrosive or toxic—proper safety precautions are essential. It is not used directly in final consumer products but as an intermediate in controlled industrial processes.



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