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Product ions obtained by tandem mass spectrometry (MS/MS) are quite effective for the amino acid sequencing of linear peptides. However, in the case of cyclic peptides, the fragmentation pattern is(More)
The novel identification method for a heat-unstable antibiotic, FC/TA-891 and its active metabolite (FCE22101) by high-performance liquid chromatography (HPLC)-atmospheric pressure chemical(More)
A rapid, selective and sensitive assay of taltirelin, a novel thyrotropin-releasing hormone analogue, in human plasma has been developed. This method is based on a rapid sample preparation and(More)
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