CAS 1877-64-1 appears in our catalog under these names: 3-(Methylsulfonyl)phenylacetic acid, 98%, 3–Methylsulfonylphenylacetic Acid, 3-(Methylsulphonyl)phenylacetic acid, 3-Methylsulfonylphenylacetic Acid 98%, 3-(Methylsulfonyl)phenylacetic acid, 97%. Offered by: Combi-blocks, GLPBio, Biosynth, Ambeed, Fluorochem. Available pack sizes: 1g, 5g, 2,5g, 100mg, 250mg.