Abstract:
:From the reaction between l-lysine and formaldehyde, Nepsilon-formyl-L-lysine was isolated by means of ion-exchange column chromatography. The identification of Nepsilon-formyl-L-lysine was carried out by ion-exchange overpressured-layer chromatography (OPLC) and 1H NMR and 13C NMR spectroscopies. The m.p. and mixed m.p. values, the retention characteristics and the chemical shifts of the isolated product were identical with those of an authentic sample of Nepsilon-formyl-L-lysine.
journal_name
J Pharm Biomed Analjournal_title
Journal of pharmaceutical and biomedical analysisauthors
Tyihák E,Trézl L,Kolonits Pdoi
10.1016/0731-7085(85)80042-xsubject
Has Abstractpub_date
1985-01-01 00:00:00pages
343-9issue
4eissn
0731-7085issn
1873-264Xpii
0731-7085(85)80042-Xjournal_volume
3pub_type
杂志文章abstract::HA was quantified in pharmaceutical formulations using HPLC-UV-detector and spectrophotometrically after the digestion with concentrated H(2)SO(4). Intact HA was quantified by capillary zone electrophoresis (CZE) using direct and indirect methods. The results were compared with the carbazole reaction established by Bi...
journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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abstract::Ultra-violet (UV) spectrophotometric and high performance liquid chromatographic methods for quantitative determination of ellagic acid (EA), an antioxidant were developed. The analytical methods were validated for linearity, accuracy, intra- and inter-day variability, and precision. EA was eluted using a polyethylene...
journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/j.jpba.2007.04.027
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
doi:10.1016/0731-7085(93)80162-t
更新日期:1993-06-01 00:00:00
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
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journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
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更新日期:1983-01-01 00:00:00
abstract::The mixture of creatinine, activated charcoal and water was stirred. As a result the conversion of creatinine into two products was observed. (1)H, (13)C NMR and HMBC spectra were recorded and the chemical shifts assigned. Two uremic toxins: creatol and N-methylguanidine were identified. To interpret the NMR data obta...
journal_title:Journal of pharmaceutical and biomedical analysis
pub_type: 杂志文章
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更新日期:2009-05-01 00:00:00
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journal_title:Journal of pharmaceutical and biomedical analysis
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