Spectrophotometric Determination of Methimazole by Silicomolybdenum Blue

Under optimum reaction conditions, Ammonium silicomolybdate could be quantitatively reduced to silicomolybdenum blue by hydrosulfuryl(-SH) in methimazole molecule, and the content of methimazole was determinated indirectly through determinating the absorbance of the silicomolybdenum blue. A novel me...

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Main Authors: Wen Xinrong, Tu Changqing
Format: Article
Language:English
Published: EDP Sciences 2018-01-01
Series:E3S Web of Conferences
Online Access:https://doi.org/10.1051/e3sconf/20185301046
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author Wen Xinrong
Tu Changqing
author_facet Wen Xinrong
Tu Changqing
author_sort Wen Xinrong
collection DOAJ
description Under optimum reaction conditions, Ammonium silicomolybdate could be quantitatively reduced to silicomolybdenum blue by hydrosulfuryl(-SH) in methimazole molecule, and the content of methimazole was determinated indirectly through determinating the absorbance of the silicomolybdenum blue. A novel method for the spectrophotometric determination of methimazole by silicomolybdenum blue has been established. The results showed that the maximum absorption wavelength of silicomolybdenum blue is 730 nm, good linear relationship is obtained between the absorbance of silicomolybdenum blue and the concentration of methimazole in the range of 8.000-160.0μg/mL, and the equation of the linear regression is A=0.0757+11.547ρ (mg/mL) with a linear correlation coefficient is 0.9998. This proposed method has been applied to determinate of methimazole in tablets, and the results agree well with those obtained by pharmacopoeial method.
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spelling doaj.art-08eec7acde2640b09dc5d22cb2fc0a122022-12-21T23:26:45ZengEDP SciencesE3S Web of Conferences2267-12422018-01-01530104610.1051/e3sconf/20185301046e3sconf_icaeer2018_01046Spectrophotometric Determination of Methimazole by Silicomolybdenum BlueWen XinrongTu ChangqingUnder optimum reaction conditions, Ammonium silicomolybdate could be quantitatively reduced to silicomolybdenum blue by hydrosulfuryl(-SH) in methimazole molecule, and the content of methimazole was determinated indirectly through determinating the absorbance of the silicomolybdenum blue. A novel method for the spectrophotometric determination of methimazole by silicomolybdenum blue has been established. The results showed that the maximum absorption wavelength of silicomolybdenum blue is 730 nm, good linear relationship is obtained between the absorbance of silicomolybdenum blue and the concentration of methimazole in the range of 8.000-160.0μg/mL, and the equation of the linear regression is A=0.0757+11.547ρ (mg/mL) with a linear correlation coefficient is 0.9998. This proposed method has been applied to determinate of methimazole in tablets, and the results agree well with those obtained by pharmacopoeial method.https://doi.org/10.1051/e3sconf/20185301046
spellingShingle Wen Xinrong
Tu Changqing
Spectrophotometric Determination of Methimazole by Silicomolybdenum Blue
E3S Web of Conferences
title Spectrophotometric Determination of Methimazole by Silicomolybdenum Blue
title_full Spectrophotometric Determination of Methimazole by Silicomolybdenum Blue
title_fullStr Spectrophotometric Determination of Methimazole by Silicomolybdenum Blue
title_full_unstemmed Spectrophotometric Determination of Methimazole by Silicomolybdenum Blue
title_short Spectrophotometric Determination of Methimazole by Silicomolybdenum Blue
title_sort spectrophotometric determination of methimazole by silicomolybdenum blue
url https://doi.org/10.1051/e3sconf/20185301046
work_keys_str_mv AT wenxinrong spectrophotometricdeterminationofmethimazolebysilicomolybdenumblue
AT tuchangqing spectrophotometricdeterminationofmethimazolebysilicomolybdenumblue