CAS 91-52-1 appears in our catalog under these names: 2,4–Dimethoxybenzoic Acid, 2,4-Dimethoxybenzoic acid, 98% , 2,4-Dimethoxybenzoic acid, 2,4-Dimethoxybenzoic Acid, >99.0%(T), 2,4-Dimethoxybenzoic acid 97%. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, TCI, Ambeed. Available pack sizes: 100g, 25g, 500g, 1000g, 5g, 2000g, 5000g, 10g.