| 摘要 |
<p>The invention is concerned with compounds according to the formula <CHEM> and their salts wherein R1 represents hydrogen or-SO3H, R2 represents hydrogen, methyl, -NHCONH2 or -NHCOCH3 and, R3 represents hydrogen, C1-4alkyl, preferably methyl or ethyl, or C1-4alkyl substituted with CN, OH, Cl, F or -SO3H. These compounds are useful as fibre-reactive dyestuffs in dyeing and printing hydroxy-group-containing and nitrogen-containing organic substrates.</p> |
