172469-98-6 3-Formamido-5-methyl-4-[(3',5'-dimethylphenyl)thio]pyridin-2(1H)-one 3-NHCHO-2-Pyridinone, 4-PhS deriv. AIDS-043206 AIDS043206 Formamide, N-[4-[(3,5-dimethylphenyl)thio]-1,2-dihydro-5-methyl-2-oxo-3-pyridinyl]-