| 摘要 |
A pyridine compound represented by formula (I): <CHEM> wherein R<1> represents hydrogen or alkyl which may be substituted; R<2> represents alkyl which may be substituted, alkenyl which may be substituted, alkynyl which may be substituted, cycloalkyl which may be substituted, etc.; R<3> represents alkyl which may be substituted, etc.; R<4> represents hydrogen, alkyl, haloalkyl, halogen, -OR<8>, or -SR<8>; R<5>, R<6> and R<7> each represents hydrogen, halogen, or alkyl; R<8> represents alkyl which may be substituted, alkenyl which may be substituted, alkynyl which may be substituted, or cycloalkyl which may be substituted; and X represents CO, CS, or SO2, or a salt thereof
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