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                    Pyrazine series
                  
                  
                  
                
                  
              
                  
                  
                  
                    
                   	Product name
                  		
                    CAS
                    Code
                    
                  
                  
                                    
                  
                       2,5 or 6, 1-Dimethyl pyrazine
                      123-32-0
                       1003
                      
                    
                  
                      2-Methyl pyrazine
                      109-08-0
                      1001
                      
                    
                  
                      2,3-Dimethyl pyrazine
                      5910-89-4
                       1002
                      
                    
                  
                      2,6-Dimethyl pyrazine
                      108-50-9
                      1004
                      
                    
                  
                      2,3,5-Trimethyl pyrazine
                      14667-55-1
                      1005
                      
                    
                  
                      3-ElhyI-2-methyl pyrazine
                       15707-23-0
                      1006
                      
                    
                  
                       2-Methoxy-(3or5)-methyl pyrazine
                       68378-13-5
                       1007
                      
                    
                  
                      2-Methyllhio-(3or5)-methyl pyrazine
                      67952-65-2
                      1008
                      
                    
                  
                      2-Acetyl pyrazine
                      22047-25-2
                      1009
                      
                    
                  
                      2-Acetyl-3-methyl pyfazine
                      23787-80-6
                      1010
                      
                    
                  
                      2-Furfurylthio-(3 or 5)-methyl pyrazine
                      65530-534
                      1011
                      
                    
                  
                      5,6,7,8-Tetrahydro quinoxaline
                      34413-35-9
                      1012
                      
                    
                  
                      5-Methyl quinoxaline
                       2760-1996
                       1013
                      
                    
                                  
                  
              
                  
                  
                  
                     
                  
                  
                  
                  
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