Chandrakant P Shinde

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A rapid and most sensitive method for simultaneous determination of enalapril (ENP) and its metabolite, enalaprilat (ENPT), in human plasma using ESI-LC-MS/MS (electrospray ionization liquid chromatography tandem mass spectrometry) positive ion multiple reactions monitoring (MRM) mode, was developed and validated. The procedure involves a simple solid-phase(More)
A rapid and highly sensitive method for the determination of acamprosate (ACM), in human plasma using ESI-LC-MS/MS (electrospray ionization liquid chromatography tandem mass spectrometry) in negative ionization polarity in multiple reactions monitoring (MRM) mode was developed and validated. The procedure involves a simple protein precipitation step.(More)
Esters of pentavalent phosphorus acids are the most important class of organophosphorus (OP) compounds. They are derivatives of the following three parent acids, viz. phosphinic acid, phosphonic acid and phosphoric acid. Phosphorus compounds may be classified as anhydride, aliphatic, aromatic, and heterocyclic. The majority of OP insecticides are(More)
A rapid and highly sensitive method for the determination of alverine (ALV) and its metabolite, para hydroxy alverine (PHA), in human plasma using LC-MS/MS in positive ion electrospray ionization (ESI) in multiple reactions monitoring (MRM) mode was developed and validated. The procedure involves a simple solid phase extraction (SPE). Chromatographic(More)
Glycerophosphocholines (GPChos) are known to cause matrix ionization effects during the analysis of biological samples (i.e. plasma, urine, etc.) in LC-MS/MS. In general, such matrix effect is directly related to an insufficient sample clean-up of the biofluids. In addition to GPCho; design of ionization source and/or LC also plays a very important role in(More)
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