CAS 321565-33-7 appears in our catalog under these names: 2-Chloro-5-methanesulfonylpyrimidine, 2-Chloro-5-methanesulfonylpyrimidine 95%, 2-Chloro-5-methanesulfonylpyrimidine, 95%, 95%, 2-Chloro-5-(methylsulfonyl)pyrimidine, 98%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 50mg, 0,5g, 5g, 100mg, 250mg, 1g.