TY - JOUR T1 - High throughput and sensitive determination of trazodone and its primary metabolite, m-chlorophenylpiperazine, in human plasma by liquid chromatography-tandem mass spectrometry. AU - Patel,Bhavin N, AU - Sharma,Naveen, AU - Sanyal,Mallika, AU - Shrivastav,Pranav S, Y1 - 2008/07/03/ PY - 2008/03/19/received PY - 2008/06/14/revised PY - 2008/06/22/accepted PY - 2008/7/16/pubmed PY - 2008/10/7/medline PY - 2008/7/16/entrez SP - 44 EP - 54 JF - Journal of chromatography. B, Analytical technologies in the biomedical and life sciences JO - J Chromatogr B Analyt Technol Biomed Life Sci VL - 871 IS - 1 N2 - A precise, sensitive and high throughput liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for simultaneous determination of trazodone (TRZ) and its primary metabolite, m-chlorophenylpiperazine (mCPP), in human plasma was developed and validated. The analytes and the internal standard-nefazodone were extracted from 500 microL aliquots of human plasma via liquid-liquid extraction in n-hexane. Chromatographic separation was achieved in a run time of 2.5 min on a Betabasic cyano column (100 mm x 2.1 mm, 5 microm) under isocratic conditions. Detection of analytes and IS was done by tandem mass spectrometry, operating in positive ion and multiple reaction monitoring (MRM) acquisition mode. The protonated precursor to product ion transitions monitored for TRZ, mCPP and IS were m/z 372.2-->176.2, 197.2-->118.1 and 470.5-->274.6 respectively. The method was fully validated for its sensitivity, selectivity, accuracy and precision, matrix effect, stability study and dilution integrity. A linear dynamic range of 10.0-3000.0 ng/mL for TRZ and 0.2-60.0 ng/mL for mCPP was evaluated with mean correlation coefficient (r) of 0.9986 and 0.9990 respectively. The intra-batch and inter-batch precision (%CV) across five validation runs (LLOQ, lower limit of quantitation; LQC, low quality control; MQC, middle quality control; HQC, high quality control and ULOQ, upper limit of quantitation) was < or =8.4% for both the analytes. The method was successfully applied to a bioequivalence study of 100mg trazodone tablet formulation in 36 healthy Indian male subjects under fasting and fed conditions. SN - 1570-0232 UR - https://www.unboundmedicine.com/medline/citation/18621591/High_throughput_and_sensitive_determination_of_trazodone_and_its_primary_metabolite_m_chlorophenylpiperazine_in_human_plasma_by_liquid_chromatography_tandem_mass_spectrometry_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1570-0232(08)00461-3 DB - PRIME DP - Unbound Medicine ER -