Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Masayuki Godo"'
Autor:
Masayuki Godo, Kazuichi Umemoto, Takahiro Ueno, Koji Urakami, Keisuke Kitamura, Atsuya Higashi
Publikováno v:
YAKUGAKU ZASSHI. 125:807-814
The feasibility of a simple Fourier transform (FT)Raman spectroscopic method for the quantitative determination of unexpected active drug polymorphs or amorphous in drug products was explored. In this study, calibration samples were prepared by ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a43b3f33217357abd347479b4dc7c33
https://doi.org/10.1248/yakushi.125.807
https://doi.org/10.1248/yakushi.125.807
Publikováno v:
Journal of Chromatography A. 1057:203-210
The influence of the matrix medium used for the determination of residual solvents in pharmaceuticals by static headspace gas chromatography was investigated. The purpose of this paper is to propose a guide for the choice of a matrix medium suitable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b44f876e5648d4f7f23b7cbebd32610c
https://doi.org/10.1016/j.chroma.2004.09.055
https://doi.org/10.1016/j.chroma.2004.09.055
Autor:
Taro Eguchi, Midori Echigoya, Masayuki Godo, Akira Terakita, Hirokazu Matsunaga, Kazuichi Umemoto, Takahiro Ueda
Publikováno v:
Chemical and Pharmaceutical Bulletin. 52:546-551
Solid-state NMR spectra and powder X-ray diffraction of the two-component molecular complex composed of tryptamine and benzoic acid were observed to investigate the intermolecular interaction in the molecular complex. 1D (13)C CP/MAS NMR spectrum and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f635a044b80469881e74dbeaa434030
https://doi.org/10.1248/cpb.52.546
https://doi.org/10.1248/cpb.52.546
Publikováno v:
Bulletin of the Chemical Society of Japan. 75:1241-1245
The transition temperature for enantiotropic polymorphs of pharmaceutical drugs was estimated by measuring the heat of solution and solubility at 25 °C. Instead of the conventional estimation method using van’t Hoff plots, a thermodynamic formula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4af99f91b421df9be9878fe0778673bb
https://doi.org/10.1246/bcsj.75.1241
https://doi.org/10.1246/bcsj.75.1241
Publikováno v:
Chemical and Pharmaceutical Bulletin. 50:263-267
A novel method for thermodynamic stability studies of polymorphic drug substances has been developed. In order to estimate the transition temperature for an enantiotropic polymorphic pair, a formula for calculating the temperature at which the solubi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::176067fb91fd5565d4a2bccde06c7663
https://doi.org/10.1248/cpb.50.263
https://doi.org/10.1248/cpb.50.263
Autor:
Takahiro, Ueno, Koji, Urakami, Atsuya, Higashi, Kazuichi, Umemoto, Masayuki, Godo, Keisuke, Kitamura
Publikováno v:
Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan. 125(10)
The feasibility of a simple Fourier transform (FT)-Raman spectroscopic method for the quantitative determination of unexpected active drug polymorphs or amorphous in drug products was explored. In this study, calibration samples were prepared by phys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::755a80f3067b9dbc2bc526dcd1d03a81
https://pubmed.ncbi.nlm.nih.gov/16205038
https://pubmed.ncbi.nlm.nih.gov/16205038
Autor:
Masayuki Godo, Chuichi Watanabe, Kazuichi Umemoto, Keiji Hashimoto, Koji Urakami, Atsuya Higashi
Publikováno v:
Chemicalpharmaceutical bulletin. 49(2)
Rapid and precise compositional analysis of copoly (DL-lactic/glycolic acid) (PLGA) was performed by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) combined with one-step hydrolysis and methylation in the presence of tetramethylammonium hy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06c28a7841058ec8a28791811427a129
https://pubmed.ncbi.nlm.nih.gov/11217110
https://pubmed.ncbi.nlm.nih.gov/11217110
Autor:
Yasuhiro Fujiwara, Kazuichi Umemoto, Koji Urakami, Yuka Saito, Chuichi Watanabe, Masayuki Godo, Keiji Hashimoto
Publikováno v:
Chemicalpharmaceutical bulletin. 48(12)
Thermal desorption (TD) techniques followed by capillary GC/MS were applied for the analysis of residual solvents in bulk pharmaceuticals. Solvents desorbed from samples by heating were cryofocused at the head of a capillary column prior to GC/MS ana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb503e0991ff8904cba256a4fe26d8e0
https://pubmed.ncbi.nlm.nih.gov/11145139
https://pubmed.ncbi.nlm.nih.gov/11145139
Publikováno v:
BUNSEKI KAGAKU. 20:1183-1186
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84feac875e4ea1c275e0b39c23da34f9
https://doi.org/10.2116/bunsekikagaku.20.1183
https://doi.org/10.2116/bunsekikagaku.20.1183