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, 98%, 98%, 4-Chloro-5-nitropyridin-2(1H)-one 97%, 4-Chloro-5-nitropyridin-2(1H)-one, 97%. Offered by: Combi-blocks, Chemat, Fluorochem, Ambeed. Available pack sizes: 1g, 10g, 100g, 25g, 5g, 50mg, 250mg, 50g.