N-Methyl-2,4,5-trichlorobenzenesulfonamide , its cas register number is 63991-43-5. It also can be called Methylamid kyseliny 2,4,5-trichlorbenzensulfonove ; BRN 2697698 ; and Benzenesulfonamide, N-methyl-2,4,5-trichloro- .