This is an Application Brief and does not contain a detailed Experimental section.
Thia application note demonstrates the gradient separation of guanine and acyclovir on ACQUITY UPLC BEH HILIC Columns.
The compounds used in this study are:
            
        | 
                     Column:  | 
                     ACQUITY UPLC BEH HILIC, 2.1 x 100 mm, 1.7 μm  | 
            
| 
                     Part Number:  | 
                     186003461  | 
            
| 
                     Mobile Phase A:  | 
                     0.2% HCOOH in H2O  | 
            
| 
                     Mobile Phase B:  | 
                     0.2% HCOOH in ACN  | 
            
| 
                     Flow Rate:  | 
                     0.556 mL/min  | 
            
| 
                     Isocratic Mobile Phase Composition:  | 
                     8% A; 92% B  | 
            
| 
                     Injection Volume:  | 
                     0.4 μL  | 
            
| 
                     Sample Concentration:  | 
                     83 μg/mL  | 
            
| 
                     Sample Diluent:  | 
                     0.02 N NaOH in 60:40 ACN:H2O  | 
            
| 
                     Temperature:  | 
                     65 °C  | 
            
| 
                     Detection:  | 
                     UV @ 254 nm  | 
            
| 
                     Sampling Rate:  | 
                     20 pts/sec  | 
            
| 
                     Time Constant:  | 
                     0.1  | 
            
| 
                     Instrument:  | 
                     Waters ACQUITY UPLC with ACQUITY TUV  | 
            
            
        WA60137, August 2009