Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Dou-sheng Zhang"'
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 102:326-330
A reversible isomerization of ceftriaxone in aqueous solution was observed, and the structure of the isomer was determined by mass spectrometry and various 1D and 2D NMR techniques. The mechanism of isomerization was also discussed. Finally, molecula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eb796ce455461cb5a7e9f448284cd84
https://doi.org/10.1016/j.jpba.2014.07.040
https://doi.org/10.1016/j.jpba.2014.07.040
Publikováno v:
Journal of Planar Chromatography – Modern TLC. 26:215-225
The objective of this study was to establish and optimize high-performance thin-layer chromatography (HPTLC) analysis of gatifloxacin and related substances by the method of design of experiment (DOE). First, preliminary screening of 22 solvents was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c50a365514eac4f705bb87a65a68f9c
https://doi.org/10.1556/jpc.26.2013.3.3
https://doi.org/10.1556/jpc.26.2013.3.3
Publikováno v:
European Journal of Medicinal Chemistry. 45:5808-5816
In this study, we first described the two configurations of cephalosporins by cefozopran, then determined their molecular structure and finally evaluated the stability and biological activity of the two configurations. Our results showed that cefozop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c410da4f6884d753c0e61ac6a409f207
https://doi.org/10.1016/j.ejmech.2010.09.043
https://doi.org/10.1016/j.ejmech.2010.09.043
Publikováno v:
Rapid Communications in Mass Spectrometry. 24:2143-2150
The structural fragment ions of nine cephalosporins were studied by electrospray ionization quadrapole trap mass spectrometry (Q-Trap MSn) in positive mode. The influence of substituent groups in the 3-position on fragmentation pathway B, an α-cleav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7243e0232390f1ad88081606f683a31f
https://doi.org/10.1002/rcm.4626
https://doi.org/10.1002/rcm.4626
Publikováno v:
The Journal of antibiotics. 68(2)
Furbenicillin is a broad-spectrum semisynthetic penicillin with strong antibacterial activity against Gram-negative bacteria. In this study, three impurities in furbenicillin, including an unknown epimer, were determined. On the basis of a complete a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eff921e3ec8d25451802a93e6ee5b7fb
https://pubmed.ncbi.nlm.nih.gov/25335696
https://pubmed.ncbi.nlm.nih.gov/25335696
Publikováno v:
Yao xue xue bao = Acta pharmaceutica Sinica. 47(4)
A novel qualitative analytical method by using two-dimensional chromatographic correlation spectroscopy techniques for recognizing impurity peaks of HPLC methods of quality control and LC-MS chromatographic system was established. The structures of m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a97db79e575feaa0315179ef3a72e527
https://pubmed.ncbi.nlm.nih.gov/22799032
https://pubmed.ncbi.nlm.nih.gov/22799032
Publikováno v:
Rapid communications in mass spectrometry : RCM. 24(14)
The structural fragment ions of nine cephalosporins were studied by electrospray ionization quadrapole trap mass spectrometry (Q-Trap MS(n)) in positive mode. The influence of substituent groups in the 3-position on fragmentation pathway B, an alpha-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::fcb915a08f64938b0b17dd51e0725218
https://pubmed.ncbi.nlm.nih.gov/20552707
https://pubmed.ncbi.nlm.nih.gov/20552707
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