 
                  
                          CAS Number: 1131-94-8 
                          Chemical Name: 3-Hydroxy-4-methoxyphenylacetic Acid 
                          Molecular Formula: C9H10O4 
                          Molecular Weight: 182.17 
                        
 
                  
                          CAS Number: 306-08-1 
                          Chemical Name: Homovanillic Acid 
                          Molecular Formula: C9H10O4 
                          Molecular Weight: 182.17 
                        
                          CAS Number: 38339-06-9 
                          Chemical Name: Homovanillic Acid Sulfate Sodium Salt 
                          Molecular Formula: C9H8Na2O7S 
                          Molecular Weight: 306.20 
                        
 
                  
                          CAS Number: 645-08-9 
                          Chemical Name: Isovanillic Acid 
                          Molecular Formula: C8H8O4 
                          Molecular Weight: 168.15 
                        
 
                  
                          CAS Number: 1329795-85-8 
                          Chemical Name: α,4-Di-O-acetyl Vanillylmandelic Acid Ethyl Ester 
                          Molecular Formula: C15H18O7 
                          Molecular Weight: NA