| 摘要 |
<p>A monoazodye of the following formula (I): <CHEM> wherein R<1> is hydrogen, methyl or chlorine, R<2> is hydrogen or methyl, R<3> is C1-C5 alkyl, R<4> is phenyl, benzyl, phenoxy, C1-C5 alkoxy, C1-C5 alkyl or benzyloxy, provided that when R<4> is alkyl, the total number of carbon atoms of R<3> and R<4> is at least 4.</p> |
