93477 ⎘
Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups; Compounds containing any of the groups , X being a hetero atom, Y being any atom; Y being a hetero atom either X or Y, but not both, being nitrogen atoms, e.g. N-sulfonylurea N-sulfonylisoureas