Structure elucidation of a PDE5 inhibitor detected as an illegal adulteration in a libido-boosting dietary supplement

Hajime TachikawaDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, JapanCorrespondence[email protected]

Rei NishiyamaDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Yoko Ichikawa-KajiDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Nozomi UemuraDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Yasuhiro TakakuDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Kiyoko KishimotoDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Yasushi OnoDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Kuniaki TayamaDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Toshinari SuzukiDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Jin SuzukiDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Takako MoriyasuDepartment of Pharmaceutical Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan

Your download is now in progress and you may close this window