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A very strong responsive and straight forward the LC-MS / MS assay was developed to and witnessed for that gradation in Nadolol and Bendroflumethiazide in rat plasma. The chromatographic conditions involve isocratic mode using Waters symmetry C18 (150x4.6 mm, 3.5 microns) column. A 0.1 per cent Smartphone process OPA (orthophosphoric Acid) Acetonitrile and in 60:40 is employed, and therefore the detection was administered during +ve mode of electrospray ionisation by using MS. The valid method had validated in the linear range of 8-160 ng/ml Nadolol and 1-20 ng/ml bendroflumethiazide, the precise values considered to be intraday and interday within the acceptable limit. Here these drugs are extracted from the rat plasma by using the liquid-liquid extraction. And these drugs are found stable. Through freeze Thaw, sampler app, vehicle sampler and top of the bench for the future studies. Form of liquid chromatography-tandem mass spectrometry and checked in compliance with guidelines for quantification of food and drug administration Nadolol and Bendroflumethiazide plasma in rats using D6-Nadolol and D6-Bendroflumethiazide as internal standards utilising LC-MS incorporated with quadrupole spectrometer by using electrospray ionisation technique. The target of this analysis is to be done work out the appropriateness of this approach to Nadolol and Bendroflumethiazide Applying Nadolol and bendroflumethiazide and their internal requirements at various quantification stages and retaining different parameters such as instrument durability, precision and accuracy, sample preparation techniques, instrument synchronisation, recovery and matrix effect.

A significant Reverse Phase-High performance Liquid Chromatography technique was developed for a more accurate, unique and quick economical method was developed for the analysis of Gramicidin in medication dosage forms. The separation of this drug Gramicidin was done by using the X-Bridge phenyl column as a stationary phase, and a mixture of acetonitrile + buffer in 50:50 v/v ratio was used as a movable phase. The buffer used in this method was Octane sulphonic acid of pH-2.5 adjusted with OPA. The maximum absorbance of eluents was observed at 235 nm. A specific flow rate (1 ml/minute) was maintained throughout the runtime of 8 min. The selected drug is eluted at 2.49 minutes. The selected drug obeys Beer Lambert's law in the concentration range of 0.5-7.5 µg/ml of Gramicidin. The percentage of recovery was found to be within the acceptable limit. The selected approach was corroborated with ICH standard ground rules, and the results of parameters like method precision, accuracy, ruggedness, robustness, and degradation studies were found to be within the allowable limit. Thus, the present method was successfully applied for the simultaneous analysis of Gramicidin in routine industrial work.

The best practices of Bio-analytical stability studies on drug samples are very crucial and essential for the drugs development process as it specify the acceptancy, purity, efficacy, prediction of strength and quality of the drugs. The main objective of this stability studies on Nadolol the proposed approach of chromatographic separation was administered in isocratic way by using asymmetric C18 column of 40:60 percent of acetonitrile and 0.1% OPA at a flow rate of 1 ml/min is a quantitative measure for drug analysis in biological matrix for more reliable, selective, reproducible and sensitive.  This stability study constituents several methods like Bench-Top, Auto-sampler, Freeze-Thaw, Dry-extract, Wet-extract, Short-term, long-Term stability studies at various intervals gave the complete stability information about these drugs. The results of these stability studies are accepted based on ICH guidelines represents this drug has a good stability under the present experimental conditions.

In this paper a comprehensive study of stability related, and evidence based best practices of Bio-analytical stability on Bendroflumethiazide drug samples are studied. The proposed approach is very significant and essential for the drugs development process address the specify the acceptancy, purity, efficacy, prediction of strength and quality of the drugs. The stability study constituents several methods like Bench-Top, Auto-sampler, Freeze-Thaw, Dry-extract, Wet-extract, Short-term, long-Term stability studies at relative intervals results the complete stability information about the drug under the proposed and validated method. There ported out comes of this methos shows this drug have good stability according to ICH guidelines.