CAS 1121-31-9 appears in our catalog under these names: 2-Mercaptopyridine N-oxide, >95% (HPLC), 2-Mercaptopyridine N-oxide, 99% , 2-Mercaptopyridine N-oxide, 2-Mercaptopyridine N-Oxide, >95.0%(T), 2-Mercaptopyridine-N-oxide, 99%. Offered by: TRC, Thermo Scientific (Alfa Aesar), Biosynth, TCI, Thermo Scientific (Acros). Available pack sizes: 1g, 500mg, 5g, 25g, 100g, 50g, 250g, 500g.