نتایج جستجو برای: losartan hydrochlorothiazide derivative ultraviolet spectrophotometry ratio derivative

تعداد نتایج: 613765  

2011
Mohamed Ibrahim Walash Mohamed Salem Rizk Zeinab Awad Sheribah Mohamed Mansour Salim

Three simple and rapid spectrophotometric methods were developed for detection and trace determination of benzophenone (the main impurity) in phenytoin bulk powder and pharmaceutical formulations. The first method, zero-crossing first derivative spectrophotometry, depends on measuring the first derivative trough values at 257.6 nm for benzophenone. The second method, zero-crossing third derivat...

2013
Ramzia I. El-Bagary Marwa A. Fouad Emad M. Hussien

Two simple and rapid spectrophotometric methods were developed for the determination of two binary mixtures: moxifloxacin hydrochloride (MFH) with ketorolac tromethamine (KTM) and ciprofloxacin hydrochloride (CFH) with dexamethasone sodium phosphate (DSP). The first method, zero-crossing derivative spectrophotometry, depends on measuring the second derivative peak and trough values at 304 nm an...

Journal: :iranian journal of pharmaceutical research 0
effat souri - aghil rahimi department of medicinal chemistry, faculty of pharmacy and pharmaceutical research center, tehran university of medical sciences, tehran (14155-6451), iran nazanin shabani ravari department of medicinal chemistry, faculty of pharmacy and pharmaceutical research center, tehran university of medical sciences, tehran (14155-6451), iran

a mixture of acetaminophen, diphenhydramine hydrochloride and pseudoephedrine hydrochloride is used for the symptomatic treatment of common cold. in this study, a derivative spectrophotometric method based on zero-crossing technique was proposed for simultaneous determination of acetaminophen, diphenhydramine hydrochloride and pseudoephedrine hydrochloride. determination of these drugs was perf...

Journal: :iranian journal of pharmaceutical research 0
effat souri - farzaneh sadat ahmadi dept of pharmaceutical chemistry, faculty of pharmacy, azad university sedighe fadaye vatan research and development, kish medipharm company majid mohammad hosseini research and development, kish medipharm company

buprenorphine is a partial mu agonist and kappa antagonist which is used for the treatment of pain and opioid addiction. a mixture of buprenorphine hydrochloride and naloxone hydrochloride has been approved for the treatment of opioid dependence.in this study a third order derivative spectrophotometric method based on zero-crossing technique has been used for the simultaneous determination of b...

Journal: :journal of the iranian chemical research 0
smita sharma department of chemistry chodhary dilip singh kanya mahavidyalya bhind (m.p) 477001, india mukesh chandra sharma school of pharmacy, devi ahilya vishwavidyalaya, indore (m.p)-452001, india

two sensitive spectrophotometric methods are presented for the assay of repaglinide in bulkdrug and in formulations using methyl orange, as reagents. oxidant by reacting with a fixedamount of either methyl orange and measuring the absorbance at 485.2 nm (method-i) andmeasuring the absorbance at 618.9 nm (method-ii). developed method is based on the formationof extractable colored complex of dru...

Journal: :Journal of pharmaceutical and biomedical analysis 2003
Olga C Lastra Igor G Lemus Hugo J Sánchez Renato F Pérez

Development and validation of an analytical UV derivative spectrophotometric method to quantify Losartan potassium used as a single active principle in pharmaceutical forms were done. Pharmacopeias have not yet provided an official method for its quantification. A study was carried out of all the parameters established by USP XXIV to validate an analytical method for a solid pharmaceutical form...

Maryam Kazemipour, Mehdi Ansari, Mohammad Shahriar,

The aim of the present work was to develop a simple and rapid method for determination of theophylline (THP) and guaifenesin (GU) in syrup without involving any preparation operations like separation or masking. A HPLC and two spectrophotometric methods based on the derivation of the main spectra are described for the determination of THP and GU in combined pharmaceutical syrup form. The first ...

2012
Mahesh Attimarad Bander E Al-Dhubiab Ibrahim A Alhaider Anroop B Nair Harsha N Sree Ahmed K Mueen

UNLABELLED BACKGROUND The new combination of moxifloxacin HCl and cefixime trihydrate is approved for the treatment of lower respiratory tract infections in adults. At initial formulation development and screening stage a fast and reliable method for the dissolution and release testing of moxifloxacin and cefixime were highly desirable. The zero order overlaid UV spectra of moxifloxacin and ...

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