Increased specificity of the  3 H-acetic anhydride coupling method for plasma analysis of drugs containing secondary amino groups.
D000447:Aldehydes; D000588:Amines / Q000097:blood*; D000812:Anhydrides; D000818:Animals; D006801:Humans; D008722:Methods; D008744:Methylamines / Q000097:blood; D009661:Nortriptyline / Q000097:blood*; D051381:Rats; D013876:Thiophenes / Q000097:blood*; D014149:Tranquilizing Agents / Q000097:blood; D014316:Tritium
D000447:Aldehydes; D000588:Amines; D000812:Anhydrides; D008744:Methylamines; D013876:Thiophenes; D014149:Tranquilizing Agents; D014316:Tritium; D009661:Nortriptyline