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              | Chemical Name: | 2-Amino-4-chloro-5-methylbenzenesulfonic acid |  
              | Synonyms: | 4-Amino-2-chlorotoluene-5-sulfonic acid; 4-Amino-6-chlorotoluene-3-sulphonic acid; 2B Acid |  
              | CAS#: | 88-51-7 |  
              | Molecular formula: | C7H8ClNO3S |  
              | Molecular weight: | 221.66 |  
              | Molecular Structure: |  |  |