Pharmaceutical Intermediate C₆H₂Cl₃NO₂

2,4,5-Trichloronitrobenzene​ CAS 89-69-0 is a chlorinated nitroaromatic compound, consisting of a benzene ring substituted with three chlorine atoms at the 2-, 4-, and 5- positions and a nitro group (-NO₂) at the 1-position. It is a key industrial intermediate with a defined asymmetry due to its specific substitution pattern. 2,4,5-Trichloronitrobenzene is a highly specialized and regiochemically defined synthon​ for agrochemical synthesis. Its precise arrangement of three chlorine atoms and one powerfully electron-withdrawing nitro group creates a predictable reactivity profile, enabling the efficient, multi-step construction of complex, bioactive molecules, particularly fungicides and herbicides.