CAS 4996-22-9 appears in our catalog under these names: 2,2-Dihydroxy-1-(4-nitrophenyl)ethanone, 96%, 2,2-Dihydroxy-1-(4-nitrophenyl)ethanone, 98%, 4–Nitrophenylglyoxal hydrate, 2,2-Dihydroxy-1-(4-nitrophenyl)ethanone, 97%, 97%, 2,2-Dihydroxy-1-(4-nitrophenyl)ethanone, 97%. Offered by: Combi-blocks, AmBeed, GLPBio, Chemat, Fluorochem. Available pack sizes: 25g, 5g, 10g, 1g, 100mg, 250mg.