Development and validation of an RP-HPLC method for the simultaneous determination of Escitalopram Oxalate and Clonazepam in bulk and its pharmaceutical formulations.

A Simple, efficient and reproducible reverse phase high performance liquid chromatographic method was developed and validated for the Simultaneous determination of Escitalopram oxalate and Clonazepam in combined dosage form. The separation was effected on a Hypersil ODS C18 column (250mm X 4.6mm; 5μ) using a mobile phase mixture of buffer and acetonitrile in a ratio of 50:50 v/v at a flow rate of 1.0ml/min. The detection was made at 240nm. The retention time of Escitalopram oxalate and Clonazepam was found to be 2.840± 0.007min and 4.007±0.006 min. Calibration curve was linear over the concentration range of 20-120μg/ml and 1-6μg/ml for Escitalopram oxalate and Clonazepam. All the analytical validation parameters were determined and found in the limit as per ICH guidelines, which indicates the validity of the method. The developed method is also found to be precise, accurate, specific, robust and rapid for the simultaneous determination of Escitalopram oxalate and Clonazepam in tablet dosage forms.

Development and Validation of RP-HPLC method for determination of Modafinil in bulk and dosage form.

A reverse phase high performance liquid chromatographic method was developed for the determination of Modafinil in bulk and dosage form. The separation was effective on a Hypersil ODS C18 column (250 mm x 4.6 mm; 5μ) using a mobile phase mixture of Buffer:Acetonitrile in a ratio of 55:45 (v/v) at a flow rate of 1.0ml/min. The detection was made at 220nm. The retention time of modafinil was found to be 4.80±0.06 min. Calibration curve was linear over the concentration range of 20-120μg/ml of modafinil. The proposed method was validated as per the ICH guidelines. The method was accurate, precise, specific and rapid and thus found to be suitable for the quantitative analysis of modafi-nil in the bulk and dosage form.

Development and validation of an RP-HPLC method for the simultaneous determination of Escitalopram Oxalate and Clonazepam in bulk and its pharmaceutical formulations.

A Simple, efficient and reproducible reverse phase high performance liquid chromatographic method was developed and validated for the Simultaneous determination of Escitalopram oxalate and Clonazepam in combined dosage form. The separation was effected on a Hypersil ODS C18 column (250mm X 4.6mm; 5μ) using a mobile phase mixture of buffer and acetonitrile in a ratio of 50:50 v/v at a flow rate of 1.0ml/min. The detection was made at 240nm. The retention time of Escitalopram oxalate and Clonazepam was found to be 2.840± 0.007min and 4.007±0.006 min. Calibration curve was linear over the concentration range of 20-120μg/ml and 1-6μg/ml for Escitalopram oxalate and Clonazepam. All the analytical validation parameters were determined and found in the limit as per ICH guidelines, which indicates the validity of the method. The developed method is also found to be precise, accurate, specific, robust and rapid for the simultaneous determination of Escitalopram oxalate and Clonazepam in tablet dosage forms.

Development and Validation of RP-HPLC method for determination of Modafinil in bulk and dosage form.

A reverse phase high performance liquid chromatographic method was developed for the determination of Modafinil in bulk and dosage form. The separation was effective on a Hypersil ODS C18 column (250 mm x 4.6 mm; 5μ) using a mobile phase mixture of Buffer:Acetonitrile in a ratio of 55:45 (v/v) at a flow rate of 1.0ml/min. The detection was made at 220nm. The retention time of modafinil was found to be 4.80±0.06 min. Calibration curve was linear over the concentration range of 20-120μg/ml of modafinil. The proposed method was validated as per the ICH guidelines. The method was accurate, precise, specific and rapid and thus found to be suitable for the quantitative analysis of modafi-nil in the bulk and dosage form.