| 摘要 |
2-Hydrazono-4,6-dinitrobenzthiazolones of the formula <IMAGE> in which X1 represents hydrogen, C1-C4-alkyl, C1-C4-hydroxyalkyl, C1-C4-sulphoalkyl or C1-C4-sulphatoalkyl, and X2 represents hydrogen or -SO2X3, where X3 may represent hydrogen, C1-C8-alkyl or optionally substituted aryl and X1 also represents a double bond between the cyclic nitrogen atom and the carbon atom 2 according to the formula II below: <IMAGE> where X2 has the meaning specified under the above formula. These hydrazones may be employed in the preparation of azo dyestuffs and as color formers for detecting of biological substances, and in the determination of H2O2.
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