Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 60200-06-8, Whether you call it Clorsulon, 4-Amino-6-(trichlorovinyl)-m-benzenedisulfonamide , 1 -3-Benzenedisulfonamide - 4-Amino-6-(trichloroethenyl)- or 4-Amino-6-(trichlorovinyl)-m-benzenedisulfonamide you can be assured the Clorsulon products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.