SO.sub.2 -containing fiber-reactive azo dyestuffs

Reactive dyestuff of the structure (1) ##STR167## in which D denotes the radical of a diazo component

• X together with the SO.sub.2 group denotes the radical of a fibre-reactive group
• L.sup.1 denotes H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, CO.sub.2 H, NHCO-C.sub.1 -C.sub.4 -alkyl, NHCONH.sub.2 or halogen,
• L.sup.2 denotes H, SO.sub.3 H, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,
• R denotes H, CH.sub.2 CH.sub.2 OH, CH.sub.2 CH.sub.2 OSO.sub.3 H or --E--SO.sub.2 X,
• E denotes --(CH.sub.2 --CH.sub.2 --O).sub.i --(CH.sub.2).sub.r --, i being 0 or 1 and r being 2 or 3,
• the dyestuff containing at least one water-solubilizing group and at least one sulfo or carboxyl group.