Spacer 18 (Hexaethylene glycol) Oligonucleotide Modification
                
             
            
            
                
                    
    
    
        
            
            Spacer 18 also known as HEG spacer (hexaethylene glycol) is a 18 atom spacer can be placed at 5', 3' or internally.  These hydrophiolic PEG spacer can be inersted in the multiple additions when a longer spacer is required especially when coupling an enzyme or antibody to an oligonucleotide, where there is a need to add a hydrophilip spcaer such as this to optimize the coupling reaction. In addition, HEG spacer also act as a blocker to stop polymerase activity at the 3' terminus. 
Contact Bio-Synthesis             for Spacer 18, HEG Spacer Modified Oligonucleotide Synthesis Services.         
            
            
                Product Information
                 
                
                    
                    
                        
                        Spacer 18 (Hexaethylene glycol) Oligonucleotide Modification
                     
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                        
                        344.12 (100.0%), 345.13(13.60%), 346.13(2.7%)
                     
                    
                    
                        
                        C, 41.86; H, 7.32; O, 41.82; P, 9.00
                     
                    
                    
                    
                    
                    
                    
                    
                        
                        
                            
                            -20°C To -70°C 
Oligonucleotides are stable in solution at 4°C for up to 2 weeks. Properly reconstituted material stored at -20°C should be stable for at least 6 months. Dried DNA (when kept at -20°C) in a nuclease-free environment should be stable for years.
                            
                         
                     
                    
                    
                        
                    
               
                    
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