3, 5 Diamino Benzoic Acid ( CAS No. 535-87-5) Product Name : 3, 5 Diamino Benzoic Acid Synonyms: 3, 5-diaminobenzoic acid CAS no. : 535 - 87 – 5 EINECS No.: 208 - 621 – 0 Applications: Intermediate for Optical Brightening Agents. CAS no. : 535-87-5