Publications by authors named "Hideo Kadoi"

A sildenafil-related compound was detected in a dietary supplement marketed as an aphrodisiac. The compound was detected during analysis of the dietary supplement using LC-UV and LC/electrospray ionization-MS. The structure of the compound was established using high resolution MS, NMR spectrometry, and X-ray crystal structure analysis.

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Article Synopsis
  • An analog of aildenafil was discovered in a dietary supplement aimed at enhancing sexual function, identified as sulfoaildenafil through various spectrometry techniques.
  • The isolation and characterization involved sophisticated methods like NMR spectrometry and mass spectrometry to differentiate it from similar compounds.
  • The study highlighted challenges in distinguishing between sulfoaildenafil and its closely related counterpart, thiohomosildenafil, using advanced chromatographic analysis methods.
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Biofouling is the undesirable adhesion and development of microorganisms and macroorganisms in a water environment. An electrochemical antifouling system based on management of primary adhesion of microorganisms was developed employing titanium electrode for antifouling of seawater cooling pipes and marine infrastructures. The system consists of an electrochemical reaction-monitoring unit, a power control unit, and a potential/current remote monitoring and a control unit.

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