C. Eckers et al., THE USE OF LIQUID-CHROMATOGRAPHY COMBINED WITH A QUADRUPOLE TIME-OF-FLIGHT ANALYZER FOR THE IDENTIFICATION OF TRACE IMPURITIES IN DRUG SUBSTANCE, Rapid communications in mass spectrometry, 11(17), 1997, pp. 1916-1922
This paper shows the use of a quadrupole time-of-flight mass spectrome
ter combined with a liquid chromatograph for the identification of tra
ce impurities in a drug substance. LC/MS/MS data obtained on trace imp
urities using this instrument compare favourably with those previously
obtained on triple quadrupole mass spectrometers and in addition the
high resolution capabilities of the ToF analyser allow accurate mass m
easurement of the fragment ions to better than 5 ppm in most cases. (C
) 1997 John Wiley & Sons, Ltd.