1-Amino-7 -[3'-(5"-chloro-2",4"-difluoropyrimidyl-6"-amino)-6'-sulfophenylazo]-8-hy droxy-2-sulfamoyl or substituted sulfamoyl-phenylazo naphthalene-3,6-disulfonic acids

Abstract

Compounds of the formula ##STR1## in which R.sub.1 is hydrogen or methyl, either R.sub.2 is hydrogen; C.sub.1-6 alkyl; C.sub.1-4 alkyl monosubstituted by halo or phenyl; C.sub.2-4 alkyl monosubstituted in the 2-, 3- or 4-position by hydroxy or C.sub.1-2 alkoxy; C.sub.5-7 cycloalkyl; C.sub.5-7 cycloalkyl substituted by one to three C.sub.1-4 alkyl groups; phenyl; phenyl substituted by one or two substituents selected from the group consisting of halo, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; or --CH.sub.2 CH.sub.2 SO.sub.3 H, and R.sub.3 is hydrogen or C.sub.1-6 alkyl, or R.sub.2 and R.sub.3, together with the nitrogen atom to which they are bound, form a 5- or 6-membered saturated heterocyclic ring, and mixtures thereof, which compounds are in free acid or salt form, useful for dyeing and printing hydroxy group-containing and amido group-containing organic substrates such as natural and synthetic polyamides (e.g., wool, silk and nylon) and natural and regenerated cellulose (e.g., cotton, viscose and spun rayon).

Dependencies are inferred from the claim text.