Preparation and application of 2-nitro-5-chloroaniline_Kain Industrial Additive

background and overview[1] 2-nitro-5-chloroaniline is an important pharmaceutical and veterinary drug intermediate. it is currently used in fenbendazole, an upgraded product of the veterinary drug albendazole, and has broad market prospects. preparation[1] synthesis of 1, 2,4-dichloronitrobenzene add 0.714mol concentrated sulfuric acid into a 250ml flask, then slowly add 0.701mol 95% nitric acid dropwise, cool and…