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Supercritical Fluid Chromatography—Mass Spectrometry (SFC-MS) and MALDI-TOF-MS of Heterocyclic Compounds with Trivalent and Pentavalent Nitrogen in Cough Relief Medical Forms Tuxi and Cosylan
American Journal of Analytical Chemistry,
2012
DOI:10.4236/ajac.2012.312A115
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