Determination of thioguanine in pharmaceutical preparations by paper substrate room temperature phosphorimetry

The Analyst ◽  
2000 ◽  
Vol 125 (7) ◽  
pp. 1327-1330 ◽  
Author(s):  
Dong Chuan ◽  
Yang Pin ◽  
Yuan Wen ◽  
Shuang Shaomin
Keyword(s):  
Room Temperature ◽  
Pharmaceutical Preparations ◽  
Paper Substrate

Simple Colorimetric Method for Determination from Pharmaceutical Preparations

1986 ◽  
Vol 69 (2) ◽  
pp. 186-188 ◽  
Author(s):  
Ramesh T Sane ◽  
Vishwanath B Malkar ◽  
Vinay G Nayak ◽  
Dhananjay S Sapre
Keyword(s):  
Room Temperature ◽  
Colorimetric Method ◽  
Pharmaceutical Preparations ◽  
Statistical Validation ◽  
Terbutaline Sulfate

Abstract A simple colorimetric method is described for the determination of terbutaline sulfate. The method is based on measurement of a colored species formed when terbutaline sulfate is treated with diazotized dapsone and p-nitroaniline at room temperature. Compounds such as starch, talc, and common excipients do not interfere in the reaction. Statistical validation showed that the method was highly precise and accurate. The results agree well with those obtained by other methods reported in the literature.

Micelle-stabilized room-temperature phosphorimetric procedure for the determination of naproxen and propranolol in pharmaceutical preparations

The Analyst ◽  
1994 ◽  
Vol 119 (5) ◽  
pp. 1093-1097 ◽  
Author(s):  
I. Rapado Martínez ◽  
R. M. Villanueva Camañas ◽  
M. C. García-Alvarez-Coque
Keyword(s):  
Room Temperature ◽  
Pharmaceutical Preparations

Stopped-flow determination of dipyridamole in pharmaceutical preparations by micellar-stabilized room temperature phosphorescence

Talanta ◽  
1999 ◽  
Vol 48 (5) ◽  
pp. 1061-1073 ◽  
Author(s):  
A. Muñoz de la Peña ◽  
A. Espinosa Mansilla ◽  
J.A. Murillo Pulgarı́n ◽  
A. Alañón Molina ◽  
P. Fernández López
Keyword(s):  
Room Temperature ◽  
Pharmaceutical Preparations ◽  
Stopped Flow ◽  
Room Temperature Phosphorescence

Determination of nafronyl in pharmaceutical preparations by means of stopped-flow micellar-stabilized room temperature phosphorescence

The Analyst ◽  
1998 ◽  
Vol 123 (11) ◽  
pp. 2285-2290 ◽  
Author(s):  
A. Muñoz de la Peña ◽  
A. Espinosa Mansilla ◽  
J. A. Murillo Pulgarín ◽  
A. Alañón Molina ◽  
P. Fernández López
Keyword(s):  
Room Temperature ◽  
Pharmaceutical Preparations ◽  
Stopped Flow ◽  
Room Temperature Phosphorescence

Determination of the Drug Naphazoline in Pharmaceutical Preparations by Heavy Atom-Induced Room-Temperature Phosphorescence

1999 ◽  
Vol 53 (6) ◽  
pp. 741-744 ◽  
Author(s):  
A. Fernández Gutiérrez ◽  
A. Segura Carretero ◽  
B. Canãbate Díaz ◽  
C. Cruces Blanco
Keyword(s):  
Room Temperature ◽  
Heavy Atom ◽  
Pharmaceutical Preparations ◽  
Room Temperature Phosphorescence

scholarly journals Kinetic Spectrophotometric Determination of Ethamsylate in Dosage Forms

2007 ◽  
Vol 90 (3) ◽  
pp. 679-685 ◽  
Author(s):  
Nahed El-Enany ◽  
Fathalla Belal ◽  
Mohamed Rizk
Keyword(s):  
Room Temperature ◽  
Kinetic Method ◽  
Pharmaceutical Preparations ◽  
Reference Method ◽  
Quantitation Limit ◽  
Experimental Parameters ◽  
Kinetic Spectrophotometric ◽  
Good Agreement

Abstract A simple and sensitive kinetic method has been developed for the determination of ethamsylate (ESL) in its pharmaceutical preparations. The method is based upon oxidation of ESL with 3-methyl-2-benzothiazolinone hydrazone hydrochloride in presence of cerium(IV) ammonium sulfate at room temperature for 20 min. The absorbance of the reaction product is measured at 514 nm. The absorbance-concentration plot was rectilinear over the range of 430 g/mL (r = 0.9999). The lower detection limit was 0.267 g/mL (9.110 106 M) and the lower quantitation limit was 0.808 g/mL. The different experimental parameters affecting the development and stability of the reaction product were studied and optimized. The proposed method was applied to the determination of ESL in formulations, and the results obtained were in good agreement with those obtained using a reference method. The proposed method was also used for the in vitro detection of ESL in spiked human plasma at its therapeutic concentration level.

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