Identification of N(1)-methyl-2-pyridone-5-carboxamide and N(1)-methyl-4-pyridone-5-carboxamide as components in urine extracts of individuals consuming coffee.
作者单位：Department of Oncology, McGill University, McIntyre Medical Science Bldg., Suite 701, 3655 Promenade Sir William Osler, Quebec, H3G 1Y6, Montreal, Canada[1]
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