CAS 90-53-9 appears in our catalog under these names: 2,3-Dimethoxyphenylacetic acid, 2-(2,3-Dimethoxyphenyl)acetic acid 98%, Benzeneacetic acid, 2,3-dimethoxy-, 98%, 98%, 2,3-Dimethoxyphenylacetic acid, 97%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 2,5g, 100mg, 250mg, 1g, 5g.