N1-Methyl-2-pyridone-5-carboxamide (also known as 1-methyl-6-oxopyridine-3-carboxamide or nudifloramide and abbreviated as 2PY, 2-Py or NMPC) is one of a number of metabolic products of nicotinamide adenine dinucleotide (NAD) degradation.[1][2][3][4] The presence of 2PY in human blood serum can be an indication of poor kidney performance or chronic kidney disease.[2][3] 2PY has been identified as a product of the metabolism of caffeine and niacin.[5]
2PY's molecular formula is C7H8N2O2 and its molecular weight 152.153 g/mol.[2]
^Shibata, Katsumi; Kawada, Teruo; Iwai, Kazuo (1988). "Simultaneous micro-determination of nicotinamide and its major metabolites, N1-methyl-2-pyridone-5-carboxamide and N1-methyl-4-pyridone-3-carboxamide, by high-performance liquid chromatography". Journal of Chromatography B. 424 (1): 23–28. doi:10.1016/S0378-4347(00)81072-5. PMID2966806.
^Wong, Pierre; Bachki, Abderrazak; Banerjee, Kris; Leyland-Jones, Brian (2002). "Identification of N1-methyl-2-pyridone-5-carboxamide and N1-methyl-4-pyridone-5-carboxamide as components in urine extracts of individuals consuming coffee". Journal of Pharmaceutical and Biomedical Analysis. 30 (3): 773–780. doi:10.1016/S0731-7085(02)00384-9. PMID12367703.