. . . . "N1-acetylspermidine + oxygen + H2O → putrescine + 3-acetamidopropanal + hydrogen peroxide"^^ . "N¹-acetylspermidine + oxygen + H₂O → putrescine + 3-acetamidopropanal + hydrogen peroxide"^^ . "1.5.3.13"^^ . . . . . . . . . . . . . "N1-acetylspermidine + oxygen + H2O → putrescine + 3-acetamidopropanal + hydrogen peroxide"^^ .