The present invention provides a monoazo compound represented by formula (1) or a salt thereof:
wherein, Y1 and Y2 represent a group selected from hydrogen atom, formula (2) and formula (3);
-CO-E-X (3)
provided that at least one of Y1 and Y2 is a group represented by formula (2);
Z is a group selected from formulae (4), (5) and (6);
本发明提供一种由
化学式(1)表示的单偶氮化合物或其盐:其中,Y1和Y2代表从氢原子、
化学式(2)和
化学式(3)中选择的基团;其中至少有一个Y1和Y2是由
化学式(2)表示的基团;Z是从
化学式(4)、(5)和(6)中选择的基团。