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                       2,3-Dihydroxybenzoic   acid
              
            
              
            
                       2,3-dimethoxybenzoic acid
              
            
              
            
                       3,4-Dihydroxybenzaldehyde
              
            
              
            
                       3,4-dimethoxybenzoic acid 
              
            
              
            
                       3,4-Dihydroxycinnamic acid 
              
            
            
            		
          
            
          
            
            
          
            
        
            		
        
            
          
            
            
            
              
            
                 
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            3,4-Dihydroxybenzaldehyde
            		
                
            
                
            
                  Appearance:
                   light  gray  crystalline  powder
                
            
                
            
                  Assay:
                  ≥99%
                
            
                
            
                  Melting Point:
                  153-156°C
                
            
                
            
                  Moisture:
                  <0.5%
                
            
                
            
                  Packing:
                  25kg/drum
                
            
                
            
                  Structural formula:
                  
                
            
              
            
              
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