Provided is a nitrogen-containing heterocyclic derivative having a 2-imino group, which is represented by the following Formula (I). [Chemical Formula 1] [in the formula, Ar represents a phenyl group which may be substituted, a 5- to 6-membered heterocycle which may be substituted, or a 4- to 10-membered heterocycloalkyl group, A represents a heterocycle having a 5- to 10-membered unsaturated bond including one or more nitrogen atoms, and has an imino group substituted with an R group at a position adjacent to the nitrogen atom present on the cycle, Y represents a hydrogen atom, a halogen atom, a hydroxyl group, a C1 to C6 alkyl group which may be substituted with a halogen atom, a C1 to C6 alkyloxy group which may be substituted with a halogen atom, a cyano group, or a nitro group, and R represents any one of groups represented by the following Formulae (a) to (e), (y) or (z)； .]本發明係可提供一種以下述式(I)所示之具有2-亞胺基之含氮雜環衍生物：[式中，Ar表示可經取代的苯基、可經取代的5~6員之雜環、或4~10員之雜環烷基、A表示具有含1個以上氮原子的5~10員不飽和鍵結之雜環，且存在於環上之氮原子的鄰接位乃具有被R基所取代之亞胺基、Y表示氫原子、鹵素原子、經基、可經鹵素原子所取代之C1~C6烷基、可經鹵素原子所取代的C1~C6烷基氧基、氰基或硝基、R表示下述之式(a)~(e)、(y)及(z)所示之基的任一者。]
