Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Kazunaga Takahashi"'
Autor:
Kazunaga Takahashi, Maki Nishimura, Takahiro Doi, Tomohide Fukiwake, Masami Kawaguchi, Katsuya Uchimoto, Midori Yamazaki, Keigo Enomoto, Hiroki Yoshino
Publikováno v:
Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi). 62:65-72
This study determined the configuration of the isomers of tadalafil, nortadalafil, and homotadalafil in dietary supplements. The products purchased over the Internet studied included a honey product and a tablet, which contained tadalafil, and a cand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08752406a51c0a2683f79562e6d4b557
https://doi.org/10.3358/shokueishi.62.65
https://doi.org/10.3358/shokueishi.62.65
Autor:
Kyohei Kiyota, Akihiro Takeda, Yoshiyuki Sawabe, Takahiro Doi, Midori Yamazaki, Tetsuo Yamano, Takaomi Tagami, Akiko Asada, Kazunaga Takahashi
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 161:61-65
A new sildenafil analog has been identified in the softgel shell of a dietary supplement. The compound was investigated by UV spectroscopy and high-resolution MS analysis, leading to the proposed structure 1-methyl-5-{5-[2-(4-methylpiperazin-1-yl)ace
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af613e15063d7dcf33ee8b75f80b3a27
https://doi.org/10.1016/j.jpba.2018.08.031
https://doi.org/10.1016/j.jpba.2018.08.031
Publikováno v:
Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi). 55:94-102
A method for the determination of 12 statins [atorvastatin (ATOR), cerivastatin (CERI), fluvastatin (FLU), lovastatin (LO), lovastatin acid (LOA), mevastatin (ME), mevastatin acid (MEA), pitavastatin (PITA), pravastatin (PRA), rosuvastatin (ROSU), si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e40f81daa9afb4355ec711ed7b9e58de
https://doi.org/10.3358/shokueishi.55.94
https://doi.org/10.3358/shokueishi.55.94
Publikováno v:
Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi). 54:379-383
We developed a simple and rapid liquid chromatography/mass spectrometry (LC/MS) method for the enantiomeric determination of DOPA in dietary supplements containing Mucuna pruriens. L- and D-DOPA were ultrasonically extracted with 1% formic acid aqueo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62006c75191ee574c0f18f0fe609482b
https://doi.org/10.3358/shokueishi.54.379
https://doi.org/10.3358/shokueishi.54.379
Publikováno v:
YAKUGAKU ZASSHI. 133:7-11
Thirty-two psychotropic substances (31 compounds and one plant) have been controlled as designated substances (Shitei-yakubutsu) in Japan by the Pharmaceutical Affairs Law since April 2007. Although the trafficking of these drugs has decreased becaus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d84458963aef2b80a8ebdbe8b6632b3
https://doi.org/10.1248/yakushi.12-00247-2
https://doi.org/10.1248/yakushi.12-00247-2
Autor:
Tomohide Fukiwake, Yuji Motoki, Yukihiro Goda, Nahoko Uchiyama, Ruri Kikura-Hanajiri, Masaaki Saijou, Takashi Hasegawa, Kazunaga Takahashi
Publikováno v:
Forensic Toxicology. 31:145-150
In our survey of designer drugs in the Japanese market, a cannabimimetic indole was identified as a new active compound in a herbal product. The structure of this compound was elucidated by liquid chromatography–photodiode array–mass spectrometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c857314f5ebca3bd295f1bb28f118e1c
https://doi.org/10.1007/s11419-012-0161-6
https://doi.org/10.1007/s11419-012-0161-6
Autor:
Yuji Haishima, Yukihiro Goda, Masaaki Kurihara, Toshiyasu Ishii, Kazunaga Takahashi, Masaaki Saijo, Takashi Hasegawa, Tomoko Nagata, Nobuo Kawahara
Publikováno v:
Chemical and Pharmaceutical Bulletin. 57:185-189
A new sildenafil analogue, cyclopentynafil (1) and a new tadalafil analogue, N-octylnortadalafil (2) were isolated from a dietary supplement illegally marketed for erectile dysfunction. The structures of the sildenafil and tadalafil analogues were el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cde5999f5537872c6527b67a2dbb44d
https://doi.org/10.1248/cpb.57.185
https://doi.org/10.1248/cpb.57.185
Publikováno v:
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan. 54(5)
We developed a simple and rapid liquid chromatography/mass spectrometry (LC/MS) method for the enantiomeric determination of DOPA in dietary supplements containing Mucuna pruriens. L- and D-DOPA were ultrasonically extracted with 1% formic acid aqueo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::8b597897d8f5e96c2c671823d29b2a76
https://pubmed.ncbi.nlm.nih.gov/24190293
https://pubmed.ncbi.nlm.nih.gov/24190293
Publikováno v:
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan. 50(6)
A rapid and simple method for determination of theophylline, theobromine and caffeine in dietary supplements containing guarana by ultra-performance liquid chromatography (UPLC) has been developed. Theophylline, theobromine and caffeine were extracte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9072f72978f766276774d2eb64ee6a7
https://pubmed.ncbi.nlm.nih.gov/20065620
https://pubmed.ncbi.nlm.nih.gov/20065620