摘要 |
<p>Oxonol dyes have formula: (where n is 0, 1 or 2; R1 is H, alkyl or aryl; R2 is alkyl, aryl, cycloalkyl, aralkyl or a heterocyclic group which may be condensed; R3 is alkyl or aryl; X is CH2 or O; Y is NH2, NHR2, NR2R3 or a group of formula II: q and m are each 0-3; and q+m is at least 3). Used as anti-halo agents.</p> |