| 摘要 |
The present invention relates to a process for the preparation of both the phenyl pyrazine derivative 2,6-diamino-3-(2,3,5-trichlorophenyl)pyrazine and an intermediate in the synthesis of 2,6-diamino-3-(2,3,5-trichlorophenyl)pyrazine, 2-{[Cyano-(2,3,5-trichlorophenyl)-methyl]-amino}-acetamidine or a salt thereof.
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