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Development and validation of UPLC method for determination of primaquine phosphate and its impurities
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HPLC-DAD and MS/MS analysis of novel drug candidates from the group of aromatic hydrazones revealing the presence of geometric isomers
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Development of a validated RP-LC/ESI-MS-MS method for separation, identification and determination of related substances of tamsulosin in bulk drugs and formulations
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Rao R.N., Talluri M.V.N.K., Raju A.N., Shinde D.D., Ramanjaneyulu G.S. Development of a validated RP-LC/ESI-MS-MS method for separation, identification and determination of related substances of tamsulosin in bulk drugs and formulations. Journal of Pharmaceutical and Biomedical Analysis 2008, 46:94-103.
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Impurities of tazarotene: isolation and structural characterization
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LC-UV and LC-MS evaluation of stress degradation behaviour of tenatoprazole
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Mahadika M., Bhusaria V., Kulkarnib M., Dhaneshwar S. LC-UV and LC-MS evaluation of stress degradation behaviour of tenatoprazole. Journal of Pharmaceutical and Biomedical Analysis 2009, 50:787-793.
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A validated stability-indicating RP-HPLC method for levofloxacin in the presence of degradation products, its process related impurities and identification of oxidative degradant
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Devi M.L., Chandrasekhar K.B. A validated stability-indicating RP-HPLC method for levofloxacin in the presence of degradation products, its process related impurities and identification of oxidative degradant. Journal of Pharmaceutical and Biomedical Analysis 2009, 50:710-717.
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LC and LC-MS/MS study of forced decomposition behavior of anastrozole and establishment of validated stability-indicating analytical method for impurities estimation in low dose anastrozole tablets
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Reddy Y.R., Nandana S.R., Bharathi D.V., Nagarajua B., Reddy S.S., Ravindranath L.K., Rao V.S. LC and LC-MS/MS study of forced decomposition behavior of anastrozole and establishment of validated stability-indicating analytical method for impurities estimation in low dose anastrozole tablets. Journal of Pharmaceutical and Biomedical Analysis 2009, 50:397-404.
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62749172349
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The stability of biapenem and structural identification of impurities in aqueous solution
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Xia M., Hang T.J., Zhang F., Li X.M., Xu X.Y. The stability of biapenem and structural identification of impurities in aqueous solution. Journal of Pharmaceutical and Biomedical Analysis 2009, 49:937-944.
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59
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62949233971
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Identification and characterization of process related impurities in chloroquine and hydroxychloroquine by LC/IT/MS, LC/TOF/MS and NMR
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Dongre V.G., Ghugare P.D., Karmuse P., Singh D., Jadhav A., Kumar A. Identification and characterization of process related impurities in chloroquine and hydroxychloroquine by LC/IT/MS, LC/TOF/MS and NMR. Journal of Pharmaceutical and Biomedical Analysis 2009, 49:873-879.
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Semi-preparative isolation and structural elucidation of an impurity in citalopram by LC/MS/MS
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Raman B., Sharma B.A., Ghugare P.D., Karmuse P.P., Kumar A. Semi-preparative isolation and structural elucidation of an impurity in citalopram by LC/MS/MS. Journal of Pharmaceutical and Biomedical Analysis 2009, 50:377-383.
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62
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Isolation and structural elucidation of two impurities from a diacerein bulk drug
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Ashok C., Golak M., Adwait D., Krishna V., Himani A., Umesh P., Amol G., Srinivas S., Sharad M., Deepali J., Atul C. Isolation and structural elucidation of two impurities from a diacerein bulk drug. Journal of Pharmaceutical and Biomedical Analysis 2009, 49:525-528.
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Study of forced degradation behavior of eletriptan hydrobromide by LC and LC-MS and development of stability-indicating method
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Jocic B., Zecevic M., Zivanovic L., Protic A., Jadranin M., Vajs V. Study of forced degradation behavior of eletriptan hydrobromide by LC and LC-MS and development of stability-indicating method. Journal of Pharmaceutical and Biomedical Analysis 2009, 50:622-629.
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Identification and quantitation of trace impurities in fatty alcohol ethoxylates using HPLC and MALDI-TOF mass spectrometry
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Identification of gentamicin impurities by liquid chromatography tandem mass spectrometry
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Grahek R., Kralj L.Z. Identification of gentamicin impurities by liquid chromatography tandem mass spectrometry. Journal of Pharmaceutical and Biomedical Analysis 2009, 50:1037-1043.
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Analysis of heparin sodium by SAX/HPLC for contaminants and impurities
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An innovative approach to the analysis of 3-[4-(2-methylpropyl)phenyl]propanoic acid as an impurity of ibuprofen on a carbon-coated zirconia stationary phase
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LC-NMR and LC-MS identification of an impurity in a novel antifungal drug icofungipen
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Development and validation of an enantioselective and chemoselective HPLC method using a Chiralpak IA column to simultaneously quantify (R)-(+)- and (S)-(-)-lansoprazole enantiomers and related impurities
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Cirilli R., Ferretti R., Gallinella B., Turchetto L., Zanitti L., Torre F.L. Development and validation of an enantioselective and chemoselective HPLC method using a Chiralpak IA column to simultaneously quantify (R)-(+)- and (S)-(-)-lansoprazole enantiomers and related impurities. Journal of Pharmaceutical and Biomedical Analysis 2009, 50:9-14.
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Development and validation of an analytical method for metformin hydrochloride and its related compound (1-cyanoguanidine) in tablet formulations by HPLC-UV
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Identification of a process impurity formed during synthesis of a nevirapine analogue HIV NNRT inhibitor using LC/MS and forced degradation studies
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Developing and optimizing a validated isocratic reversed-phase high-performance liquid chromatography separation of nimodipine and impurities in tablets using experimental design methodology
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Doping in sport-2. Quantification of the impurity 19-norandrostenedione in pharmaceutical preparations of norethisterone
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Isolation and characterization of a potential process related impurity of phenazopyridine HCl by preparative HPLC followed by MS-MS and 2D-NMR spectroscopy
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Profiling and quantification of isoflavone-C-glycosides impurities in puerarin injection by liquid chromatography coupled to ESI-ion trap mass spectrometry
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Zhanga H., Yang X. Profiling and quantification of isoflavone-C-glycosides impurities in puerarin injection by liquid chromatography coupled to ESI-ion trap mass spectrometry. Journal of Pharmaceutical and Biomedical Analysis 2009, 49:843-847.
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Chemometrical evaluation of ropinirole and its impurity's chromatographic behavior
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HPLC analysis, semi-preparative HPLC preparation and identification of three impurities in salidroside bulk drug
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Separation of stereoisomers of sertraline and its related enantiomeric impurities on a dimethylated β-cyclodextrin stationary phase by HPLC
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Identification and structural elucidation of process impurities generated in the end-game synthesis of taranabant (MK-0364) via cyanuric chloride
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Determination of tropicamide and its major impurity in raw material by the HPLC-DAD analysis and identification of this impurity using the off-line HPLC-FT-IR coupling
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Stefanowicza Z., Stefanowicz J., Mulas K. Determination of tropicamide and its major impurity in raw material by the HPLC-DAD analysis and identification of this impurity using the off-line HPLC-FT-IR coupling. Journal of Pharmaceutical and Biomedical Analysis 2009, 49:214-220.
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Identification and characterization of potential impurities of valsartan, AT1 receptor antagonist
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Identification, characterization and synthesis of impurities of zafirlukast
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Structural identification and characterization of potential degradants of zotarolimus on zotarolimus-coated drug-eluting stents
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Isolation and structure characterization of related impurities in 10-O-(N,N-dimethylaminoethyl)-ginkgolide B methanesulfonate (XQ-1H) bulk drug and quantitation by a validated RP-LC
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Liu W., Li P., Feng F., Mao L. Isolation and structure characterization of related impurities in 10-O-(N,N-dimethylaminoethyl)-ginkgolide B methanesulfonate (XQ-1H) bulk drug and quantitation by a validated RP-LC. Journal of Pharmaceutical and Biomedical Analysis 2010, 52:603-608.
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A validated stability-indicating LC method for acetazolamide in the presence of degradation products and its process-related impurities
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Development and validation of a stability indicating RP-HPLC method for the simultaneous determination of related substances of albuterol sulfate and ipratropium bromide in nasal solution
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Different photodegradation behavior of barnidipine under natural and forced irradiation
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95
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Analytical control of process impurities in pazopanib hydrochloride by impurity fate mapping
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A validated stability-indicating normal phase LC method for clopidogrel bisulfate and its impurities in bulk drug and pharmaceutical dosage form
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A validated stability-indicating UPLC method for desloratadine and its impurities in pharmaceutical dosage forms
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Determination of duloxetine hydrochloride in the presence of process and degradation impurities by a validated stability-indicating RP-LC method
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Identification of new impurities of enalapril maleate on oxidation in the presence of magnesium monoperoxyphthalate
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Characterization of a novel impurity in bulk drug eprosartan by ESI/MSn and NMR
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Structural elucidation of process-related impurities in escitalopram by LC/ESI-MS and NMR
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Development and validation of a stability-indicating UHPLC method for assay of felbamate and related substances
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Forced degradation of fentanyl: identification and analysis of impurities and degradants
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Correlation of liquid chromatographic and biological assay for potency assessment of filgrastim and related impurities
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A multi-technique approach using LC-NMR, LC-MS, semi-preparative HPLC, HR-NMR and HR-MS for the isolation and characterization of low-level unknown impurities in GW876008, a novel corticotrophin-release factor 1 antagonist
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Control of impurities in l-aspartic acid and l-alanine by high-performance liquid chromatography coupled with a corona charged aerosol detector
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Direct HPLC enantioseparation of omeprazole and its chiral impurities: application to the determination of enantiomeric purity of esomeprazole magnesium trihydrate
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Comparison of impurity profiles of orlistat pharmaceutical products using HPLC tandem mass spectrometry
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Degradation studies of pentoxifylline: isolation and characterization of a novel gem-dihydroperoxide derivative as major oxidative degradation product
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Simultaneous determination of piracetam and its four impurities by RP-HPLC with UV detection
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Liquid chromatographic separation of pregabalin and its possible impurities with fluorescence detection after postcolumn derivatization with O-phtaldialdehyde
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Identification, isolation and characterization of new impurity in rabeprazole sodium
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LCMS using a hybrid quadrupole time of flight mass spectrometer for impurity identification during process chemical development of a novel integrase inhibitor
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Isolation and identification of ester impurities in RG7128, an HCV polymerase inhibitor
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Structural elucidation of the rifaximin Ph. Eur. impurity H
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LC-MS/MS studies of ritonavir and its forced degradation products
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Development and validation of a HPLC method for the determination of sertraline and three non-chiral related impurities
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Stability-indicating UPLC method for determination of valsartan and their degradation products in active pharmaceutical ingredient and pharmaceutical dosage forms
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Application of LC-NMR and HR-NMR to the characterization of biphenyl impurities in the synthetic route development for vestipitant, a novel NK1 antagonist
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Isolation and identification of five impurities of ALB 109564(a) drug substance
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Identification of impurities in artemisinin, their behavior in high performance liquid chromatography and implications for the quality of derived anti-malarial drugs
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Gradient RP-HPLC method for the determination of potential impurities in atazanavir sulfate
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Highly efficient, selective, sensitive and stability indicating RP-HPLC-UV method for the quantitative determination of potential impurities and characterization of four novel impurities in eslicarbazepine acetate active pharmaceutical ingredient by LC/ESI-IT/MS/MS
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