Zobrazeno 1 - 6 of 6 pro vyhledávání: '"John D. Franolic"'
1
LC determination of impurities in methoxsalen drug substance: isolation and identification of isopimpinellin as a major impurity by atmospheric pressure chemical ionization LC/MS and NMR
Autor: Gary J Lehr, John D Franolic, Peter Scheiner, Glenn Petzinger, Thomas L. Barry
Publikováno v: Journal of Pharmaceutical and Biomedical Analysis. 33:627-637
A gradient elution LC method was developed to separate methoxsalen from three of its known impurities: isopimpinellin, bergapten, and ammidin. The method employs a methanol–6%THF (aq) mobile phase, phenyl column, and detection at 254 nm. The gradie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66b10a27e5cdeddf55479d89b7d0be96
https://doi.org/10.1016/s0731-7085(03)00353-4
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2
Protonation of Fischer-type alkylidyne carbonyltungsten complexes. Structural comparison of alkylidyne and alkylidene metal complexes, including a neutron diffraction study of [W(CHCH3)Cl2(CO)(PMe3)2]
Autor: Andreas Mayr, Thomas F. Koetzle, Stephen A. Koch, Wim T. Klooster, Donna Van Engen, Ken S. Lee, Cecilia M. Bastos, Michael A. Kjelsberg, John D. Franolic
Publikováno v: Inorganica Chimica Acta. 279:7-23
Protonation of alkylidyne tungsten complexes of the types [W(CR)Cl(CO)(PMe3)3] or [W(CR)Cl(CO)(py)(PMe3)2] with HCl affords the η2-alkylidene tungsten complexes [W(CHR)Cl2(CO)(PMe3)2] (7) (R = Me, Et, Ph, p-Tol). Protonation of the complexes [W(CR)X
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38269beb29b00f0ea54230b71b43d077
https://doi.org/10.1016/s0020-1693(98)00004-8
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