CAS 850663-54-6 appears in our catalog under these names: 4-Chloro-2-hydroxy-5-nitropyridine, 98%, 4-Chloro-5-nitropyridin-2(1h)-one, 98%, 4-Chloro-5-nitropyridin-2(1H)-one 97%, 4-Chloro-5-nitropyridin-2(1H)-one, 98%, 98%. Offered by: Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 10g, 100g, 25g, 5g, 1000g, 250mg, 500g.