1 3 5 benzenetricarbonyl trichloride cas no July 8, 2019 16 32 64 128 1 3 5-benzenetricarbonyl trichloride Benzene-1 3 5-tricarbonyl trichloride 1 3 5-benzenetricarbonyl chloride 1 2 3-trichlorobenzene 1 3 5-benzenetricarboxylic acid chloride