| 摘要 |
A water-insoluble styryl dyestuff of the formula IN WHICH Y1 represents hydrogen, methyl or methoxy, Y2 hydrogen or methoxy, A lower alkylene which may contain a further group of the formula -OCOB, Z stands for a member selected from the group consisting of lower alkyl, phenyl-lower alkyl, lower alkanoyloxy-lower alkyl and the group of the formula -A-OCOB and B is a member selected from the group consisting of phenyl which may be substituted by chlorine, lower alkyl, lower alkoxy, lower carbalkoxy or hydroxy groups, thienyl, lower carbalkoxy-thieneyl, phenyl, styryl, phenoxymethyl and phenacetyl.
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