Isomerisation accompanying fluorodenitration of trifluoromethyl activated diphenyl sulfones.
Clark JH and Wails D.
Tetrahedron Letters, 34(24), 3901-3902 (1993)
Tatsuya Higashi et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 18(12), 1301-1307 (2002-12-28)
Derivatization of neutral steroids for increasing sensitivity in liquid chromatography/negative atmospheric pressure chemical ionization-mass spectrometry (APCI-MS) has been examined. Under APCI conditions, gas-phase electrons are provided by the corona discharge and captured by electron-affinitive compounds. In negative APCI-MS, therefore, ultrahigh...