| 摘要 |
Compounds of formula II <IMAGE> wherein R1 is a hydrocarbon, halogenated hydrocarbon, polyether, substituted phenyl, substituted benzyl or alkylamine; and R2, R3 and R4 are hydrogen, lower alkyl, halogen, haloalkyl, alkoxy and similar substituents are disclosed. The compounds are useful in the treatment of M. avium. Methods and compositions utilizing novel as well as known compounds are disclosed.
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