CAS 20430-18-6 appears in our catalog under these names: 2-Methyl-2-(4-methylphenyl)propanoic acid, 95%, 2–methyl–2–(p–tolyl)propanoic acid, 2-Methyl-2-(p-tolyl)propanoic acid 95%, 2-Methyl-2-(p-tolyl)propanoic acid, 95%, 95%, 2-Methyl-2-(4-methylphenyl)propanoic acid, 98%. Offered by: Combi-blocks, GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 5g, 1g, 250mg, 25g, 100mg.