PROBLEM TO BE SOLVED: To provide an antibacterial low-molecular-weight compound against periodontal pathogens.SOLUTION: An anti-periodontal pathogen agent contains a compound represented by the following formula (where R1 and R2 independently represent a hydrogen atom or a hydroxyl group) or a salt thereof.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】歯周病原細菌に対する抗菌性低分子化合物の提供。【解決手段】下記式で表される化合物:(式中、R1及びR2はそれぞれ独立に、水素原子又はヒドロキシル基である)又はその塩を含む、抗歯周病原細菌剤。【選択図】なし