Methylnicotinamide (MNA) chloride (C7H9N2OHCl; MWt = 159.61) was purchased from
Methylnicotinamide (MNA) chloride (C7H9N2OHCl; MWt = 159.61) was bought from Tokyo Kasei Kogyo (Tokyo, Japan). N1Methyl2pyridone5carboxamide (2Py, C7H8N2O2; MWt = 152.15) and N1methyl4pyridone3carboxamide (4Py, C7H8N2O2; MWt = 152.15) had been…