Symmetrical compounds of the formula, ##STR1## in which R.sub.1 is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,R.sub.2 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or --NHCOR.sub.6,R.sub.3 is hydrogen or C.sub.1-4 alkyl,each of R.sub.4 and R.sub.5, independently, is hydrogen, C.sub.1-4 alkyl or hydroxy C.sub.2-4 alkyl,R.sub.6 is C.sub.1-4 alkyl, --NH.sub.2, --NC(C.sub.1-4 alkyl) or --N(C.sub.1-4 alkyl).sub.2,Hal is fluorine, chlorine or bromine, andX is either C.sub.2-10 alkylene, C.sub.3-10 alkenylene, mono- or dihydroxy C.sub.3-10 alkylene optionally containing one or two hetero atom linkages C.sub.5-7 cycloalkylene optionally substituted by 1 or 3 C.sub.1-4 alkyl groups,or X together with ##STR2## form a piperazine ring, with the proviso that X is other than unsubstituted C.sub.2-10 alkylene when R.sub.2 is --NHCOR.sub.6,salts thereof and, mixtures of such compounds, which compounds are useful as fibre-reactive dyestuffs for dyeing and printing hydroxy group-containing and nitrogen-containing organic substrates, e.g., leather and textiles comprising or consisting of natural or synthetic polyamides such as wool, silk and nylon or natural or regenerated cellulose such as cotton, viscose and spun rayon.