PMID- 23158354 OWN - NLM STAT- MEDLINE DCOM- 20130501 LR - 20191210 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 101 DP - 2012 Nov 15 TI - Development and validation of a simple and sensitive high performance liquid chromatographic method for the simultaneous determination of anastrozole, bicalutamide, tamoxifen, and their synthetic impurities. PG - 495-503 LID - S0039-9140(12)00824-7 [pii] LID - 10.1016/j.talanta.2012.10.004 [doi] AB - A simple and sensitive analytical method for simultaneous determination of anastrozole, bicalutamide, and tamoxifen as well as their synthetic impurities, anastrozole pentamethyl, bicalutamide 3-fluoro-isomer, and tamoxifen e-isomer, was developed and validated by using high performance liquid chromatography (HPLC). The separation was achieved on a Symmetry((R)) C-8 column (100x4.6 mm i.d., 3.5 mum) at room temperature (+/-24 degrees C), with a mobile phase consisting of acetonitrile/water containing 0.18% N,N dimethyloctylamine and pH adjusted to 3.0 with orthophosphoric acid (46.5/53.5, v/v) at a flow rate of 1.0 mL min(-1) within 20 min. The detection was made at a wavelength of 270 nm by using ultraviolet (UV) detector. No interference peaks from excipients and relative retention time indicated the specificity of the method. The calibration curve showed correlation coefficients (r) >0.99 calculated by linear regression and analysis of variance (ANOVA). The limit of detection (LOD) and limit of quantitation (LOQ), respectively, were 2.2 and 6.7 mug mL(-1) for anastrozole, 2.61 and 8.72 mug mL(-1) for bicalutamide, 2.0 and 6.7 mug mL(-1) for tamoxifen, 0.06 and 0.22 mug mL(-1) for anastrozole pentamethyl, 0.02 and 0.07 mug mL(-1) for bicalutamide 3-fluoro-isomer, and 0.002 and 0.007 mug mL(-1) for tamoxifen e-isomer. Intraday and interday relative standard deviations (RSDs) were <2.0% (drugs) and <10% (degradation products) as well as the comparison between two different analysts, which were calculated by f test. CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - Gomes, Fabio Pereira AU - Gomes FP AD - School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, 20 Cornwall Street, Woolloongabba, QLD 4102, Australia. f.pereiragomes@uq.edu.au FAU - Garcia, Pedro Lopez AU - Garcia PL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20121016 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R RN - 0 (Anilides) RN - 0 (Nitriles) RN - 0 (Tosyl Compounds) RN - 0 (Triazoles) RN - 094ZI81Y45 (Tamoxifen) RN - 2Z07MYW1AZ (Anastrozole) RN - A0Z3NAU9DP (bicalutamide) SB - IM MH - Analysis of Variance MH - Anastrozole MH - Anilides/*analysis MH - Calibration MH - Chromatography, High Pressure Liquid/*methods MH - Limit of Detection MH - Nitriles/*analysis MH - Reproducibility of Results MH - Tamoxifen/*analysis MH - Tosyl Compounds/*analysis MH - Triazoles/*analysis EDAT- 2012/11/20 06:00 MHDA- 2013/05/02 06:00 CRDT- 2012/11/20 06:00 PHST- 2012/08/10 00:00 [received] PHST- 2012/10/02 00:00 [revised] PHST- 2012/10/04 00:00 [accepted] PHST- 2012/11/20 06:00 [entrez] PHST- 2012/11/20 06:00 [pubmed] PHST- 2013/05/02 06:00 [medline] AID - S0039-9140(12)00824-7 [pii] AID - 10.1016/j.talanta.2012.10.004 [doi] PST - ppublish SO - Talanta. 2012 Nov 15;101:495-503. doi: 10.1016/j.talanta.2012.10.004. Epub 2012 Oct 16.