A rapid liquid chromatography/tandem mass spectrometry method for simultaneous determination of levodopa, carbidopa, entacapone and their six related compounds in film‐coated tablets

Rapid Separation Technique for the Determination of Potential Impurities Present in Levodopa, Carbidopa, and Entacapone in Fixed Dose Combination Drug Product Using Trifunctionally Bonded Phase Ethylene Bridged Sorbent Column with Smaller Ion-Pair Reagent

(2015) Bhaskara P. V. Mantena et al.   JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES

Simultaneous determination of levodopa, carbidopa, entacapone, tolcapone, 3-O-methyldopa and dopamine in human plasma by an HPLC–MS/MS method

(2015) Rômulo Pereira Ribeiro et al.   Bioanalysis

A new HILIC-MS/MS method for the simultaneous analysis of carbidopa, levodopa, and its metabolites in human plasma

(2014) Raquel de Oliveira Vilhena et al.   JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES

LC Determination of Entacapone in Tablets: In Vitro Dissolution Studies

(2013) C. S. Paim et al.   JOURNAL OF CHROMATOGRAPHIC SCIENCE

Chaotropic agents in liquid chromatographic method development for the simultaneous analysis of levodopa, carbidopa, entacapone and their impurities

(2013) Ana Vemić et al.   JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS

Determination of levodopa in human plasma by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS): application to a bioequivalence study

(2013) Heliana F. Martins et al.   QUIMICA NOVA

IOFI recommended practice for the quantitative analysis of volatile flavouring substances using coupled gas chromatography/mass spectrometry with selected-ion monitoring (SIM)

(2012)   FLAVOUR AND FRAGRANCE JOURNAL

APPLICATION OF HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC METHOD FOR THE DETERMINATION OF LEVODOPA, CARBIDOPA, AND ENTACAPONE IN TABLET DOSAGE FORMS

(2011) Yousry M. Issa et al.   JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES

Development and validation of a high-performance liquid chromatography-electrospray ionization-MS/MS method for the simultaneous quantitation of levodopa and carbidopa in human plasma

(2011) Isabela Costa César et al.   JOURNAL OF MASS SPECTROMETRY

Simultaneous quantitation of levodopa and 3-O-methyldopa in human plasma by HPLC–ESI-MS/MS: Application for a pharmacokinetic study with a levodopa/benserazide formulation

(2011) Isabela da Costa César et al.   JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS

Simultaneous Determination of Levodopa, Benserazide and 3-O-Methyldopa in Human Serum by LC–MS–MS

(2010) Le Pan et al.   CHROMATOGRAPHIA

Development of characterization methods for entacapone in a pharmaceutical bulk

(2010) Nadejda Soukhova et al.   JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS

Determination of l-dopa, carbidopa, 3-O-methyldopa and entacapone in human plasma by HPLC–ED

(2010) F. Bugamelli et al.   JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS

Stress Degradation Behavior of Entacapone and Development of LC Stability-Indicating Related Substances and Assay Method

(2009) Satheesh Kumar Shetty et al.   CHROMATOGRAPHIA

Levodopa delivery systems for the treatment of Parkinson's disease: An overview

(2009) J. Goole et al.   INTERNATIONAL JOURNAL OF PHARMACEUTICS

Chromatographic separation of (E)- and (Z)-isomers of entacapone and their simultaneous quantitation in human plasma by LC–ESI-MS/MS

(2009) Manish Yadav et al.   JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES