Patent ID: 7781425

Claim:
A guanidine compound having a biaryl skeleton represented by the following formula (Z): wherein R 1 , R 2 and R 3 each independently represent a hydrogen atom, a hydrocarbon group optionally having substituent(s), or a heterocyclic group optionally having substituent(s); R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 and R 11 each independently represent a hydrogen atom, a hydrocarbon group optionally having substituent(s), a heterocyclic group optionally having substituent(s), a hydroxy group, an alkoxy group optionally having substituent(s), an aryloxy group optionally having substituent(s), an acyl group, an alkoxycarbonyl group optionally having substituent(s), an aryloxycarbonyl group optionally having substituent(s), a carbamoyl group optionally having substituent(s), an alkylthiocarbonyl group optionally having substituent(s), an arylthiocarbonyl group optionally having substituent(s), a carboxyl group, an alkylthio group optionally having substituent(s), an arylthio group optionally having substituent(s), an amino group or a substituted amino group, a substituted silyl group or a halogen atom.