TCI C0231 4-Chloro-2-nitrotoluene (CAS 89-59-8) is a chloronitrotoluene isomer whose nitro group sits ortho to the methyl substituent. Reduction of the nitro group affords the corresponding substituted aniline, a classical precursor for azo dyes and fused nitrogen heterocycles. The retained aryl chloride provides an additional site for later functionalization, while the methyl group can be oxidized or halogenated. TCI offers this building block in 25 g and 500 g pack sizes for synthetic, dye, and agrochemical laboratories.
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