| abstract |
The present invention discloses compounds of formula (1) or formula (2). These compounds are used for dyeing organic materials such as keratin fibers, wool, leather, silk, cellulose or polyamides, especially fibers containing keratin, cotton or nylon, preferably hair, more preferably human hair. (1)(2). (1)A-(X 1 ) p -(C sat ) r -SS-(C sat ) q -(X 2 ) p -D |