1-(4-Fluoro-5-methoxy-2-nitrop

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Precolumn derivatization of amino acids followed by their resolution by reverse-phase high-performance liquid chromatography (RP-HPLC) is now the preferred method for quantitative amino acid analysis. The derivatization step introduces

Natural Product Chemistry in Action: The Synthesis of Melatonin Metabolites K1 and K2

melatonin, the kynurenamines N1-acetyl-N2 -formyl-5-methoxykynurenine (K1 ) and N -acetyl-5-methoxykynurenamine (K2 ). The four key synthetic transformations involve (a) conversion of 4-methoxy aniline into the tert -butyl (4-methoxyphenyl)carbamate, (b

细胞增殖和细胞毒性（CCK-8法）原理和经验总结

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