Product Name: 3,5-Dihydroxybenzoic Acid Also Named: alpha-Resorcylic Acid 3,5-Dihydroxy Benzoic Acid α-Resorcylic Acid Molecular Structure: CAS No.:99-10-5 Character: white crystal of needle form. Molecular Weight: 154.12224 Use: It serves for medical synthesizing or organic intermediate.