The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A liquid chromatography–tandem mass spectrometry (LC‐MS/MS) method was developed to determine total N‐acetylcysteine in human plasma. Mass spectrometric detection was achieved in positive electrospray ionization and multiple reaction monitoring mode. The mass transition pairs of N‐acetylcysteine and the isotope‐labeled internal standard d3‐N‐acetylcysteine were 164 → 122 and 167 → 123, respectively...
Fentanyl is a potent analgesic drug in relieving chronic pain in patients. In this report, we present a simple, reliable and sensitive LC–ID/MS method for the quantification of fentanyl in human plasma. LC‐ID/MS analysis was carried out on a triple quadrupole mass spectrometer operated in positive electrospray ionization multiple‐reaction‐monitoring using the transitions m/z 337.6 → 187.9 for fentanyl...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.