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    STUDIA PHYSICA - Issue no. SPECIAL%20ISSUE / 2001  
         
  Article:   SECONDARY AMINES SPECIFIC LABELED WITH DEUTERIUM.

Authors:  V. ALMASAN, MIHAELA LAZAR, EVA LAURA GANEA.
 
       
         
  Abstract:  The analyses of structures and qualities of chemical substances is a modern problematic with implications in many research areas. The analysis accuracy is influenced by the utilization of some standard molecules. The specific deuterium labeled molecules have a great advantage because they have the same chemical potential like the natural molecules, but in addition, they differ only by their molecular masses. These kinds of molecules can be used like internal standards, into the MS and NMR analyses. Using these internal standards, the MS research becomes more efficient. Thus, the research laboratories, which undertake chemical synthesis of new drugs, ask for these isotopically labeled molecules for the establishment of analytical methods and the certification of drugs molecular structure and properties.  
         
     
         
         
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