... intermediates 2. in pharmaceutical, chemical, pesticide, spies 3. CAS:1132-21-4 4. C9H10O4 3,5-Dimethoxy benzoic acidCAS:1132 ... -21-4Molecular formula:C9H10O4Properties:1. white needle crystal.2. melting point ... per drum. 3,5-Dimethoxy benzoic acid,CAS NO.1132-21-4