<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sacré, Pierre-Yves</style></author><author><style face="normal" font="default" size="100%">Eric Deconinck</style></author><author><style face="normal" font="default" size="100%">Chiap, Patrice</style></author><author><style face="normal" font="default" size="100%">Crommen, Jacques</style></author><author><style face="normal" font="default" size="100%">Mansion, François</style></author><author><style face="normal" font="default" size="100%">Rozet, Eric</style></author><author><style face="normal" font="default" size="100%">Patricia Courselle</style></author><author><style face="normal" font="default" size="100%">De Beer, Jacques O</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Development and validation of a ultra-high-performance liquid chromatography-UV method for the detection and quantification of erectile dysfunction drugs and some of their analogues found in counterfeit medicines.</style></title><secondary-title><style face="normal" font="default" size="100%">J Chromatogr A</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J Chromatogr A</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Acetonitriles</style></keyword><keyword><style  face="normal" font="default" size="100%">Analysis of Variance</style></keyword><keyword><style  face="normal" font="default" size="100%">Chromatography, High Pressure Liquid</style></keyword><keyword><style  face="normal" font="default" size="100%">Counterfeit Drugs</style></keyword><keyword><style  face="normal" font="default" size="100%">Linear Models</style></keyword><keyword><style  face="normal" font="default" size="100%">Phosphodiesterase 5 Inhibitors</style></keyword><keyword><style  face="normal" font="default" size="100%">Piperazines</style></keyword><keyword><style  face="normal" font="default" size="100%">Purines</style></keyword><keyword><style  face="normal" font="default" size="100%">Reproducibility of Results</style></keyword><keyword><style  face="normal" font="default" size="100%">Sildenafil Citrate</style></keyword><keyword><style  face="normal" font="default" size="100%">Spectrophotometry, Ultraviolet</style></keyword><keyword><style  face="normal" font="default" size="100%">Sulfones</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011 Sep 16</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">1218</style></volume><pages><style face="normal" font="default" size="100%">6439-47</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Pharmaceutical counterfeiting is a permanently growing problem. Control laboratories are constantly analysing counterfeit medicines. In industrialised countries, one of the main counterfeited class of medicines are erectile dysfunction drugs. This paper describes the development and validation of a fast method to detect and quantify the three authorised phosphodiesterase type 5 inhibitors and five analogues. The method is based on the use of a sub-2 microns polar-embedded column with a gradient using acetonitrile as organic modifier and 10mM ammonium formate buffer (pH 3.5) as aqueous component of the mobile phase. The separation was achieved in less than 4.5 min. The method has also been compared to the registered HPLC method for the assay of Viagra(®) which was considered as the reference method. The method is also compatible with on-line coupling mass spectrometry and will significantly reduce analysis times and solvent consumption.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">37</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/21835410?dopt=Abstract</style></custom1></record></records></xml>