| abstract |
An active oxygen inhibitor composition containing a coordinated complex represented by general formula (I) as the active ingredient (wherein R₁ and R₂ represent each independently hydrogen, C₁-C₁₂ alkyl, C₁-C₁₂ alkoxy, halogen, hydroxy, nitro, amino, carboxy or C₂-C₆ acyloxy; and M represents a central atom selected from among Cu, Mn and Zn); and a coordinated complex represented by general formula (II), wherein R 1-a and R 2-a are the same as the R₁ and R₂ defined in formula (I); and Ma represents either Cu or Mn, provided that the case where Ma represents Cu and each of R 1-a and R 2-a represents hydrogen, the case where R 1-a represents hydrogen and R 2-a represents hydroxy located either at the 4-position or at the 5-position, and the case where Ma represents Mn and each of R 1-a and R 2-a represents hydrogen are excepted. |