CAS 1559062-17-7 appears in our catalog under these names: 4-(Methylsulfonyl)-1h-pyrazole, 95%, 4-Methanesulfonyl-1H-pyrazole, 4-(Methylsulfonyl)-1H-pyrazole 97%, 4-(Methylsulfonyl)-1H-pyrazole, ≥97%, ≥97%, 4-(methylsulfonyl)-1H-pyrazole, 98%. Offered by: Combi-blocks, Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 5g, 1g, 250mg, 10g, 25g, 100mg.