A substituted benzene derivative represented by a formula: where A represents: wherein X is a hydrogen atom, a halogen atom or a nitro group, R<1> is -X<1>Z<1> (X<1> is an oxygen atom or a sulfur atom and Z<1> is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substitute or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group), -COZ<1> group (Z<1> is as defined above), group (Z<1> is as defined above, Z<2> is -CO2Z<3> wherein Z<3> is the same as Z<1>, or -SO2Z<3> wherein Z<3> is as defined above and n is 0 or 1), (Z<1> and Z<3> are as defined above) or (X<2>, X<3> and X<4> are, respectively, an oxygen atom or a sulfur atom and Z<4> and Z<5> are the same as Z<1>), and R<3> is a nitro group or (R<4> and R<5> are, respectively, an alkyl group, or they may form a heterocyclic group together with the adjacent nitrogen atom), or wherein X and R<3> are as defined above and R<2> is -X<1>Z<1> (X<1> and Z<1> are as defined above); Y is a halogen atom, a subsituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkythio group, a nitro group or (R<6> and R<7> are, respectively, a substituted or unsubstituted alkyl group); R is (R<8> is the same as Y and q is an integer of 1 to 4), (R<8> is as defined above, and r is an integer of 1 to 3) or (R<8> and r are as defined above); and m is an integer of 1 to 4, or its salt.