International Scholarly Research Notices / 2012 / Article / Tab 4 / Research Article
Simple Methods for the Spectrophotometric Determination of Carvedilol Table 4 Results of assay of formulations.
Brand name Carcaa Carvilb Carlocc Labeled amount (mg) 3.125 3.125 25.0 Reference value [15 ] Percent of label claim ± SD 99.8 ± 0.20 99.92 ± 0.17 98.99 ± 0.18 (1) PDAB (i) Amount found 3.115 3.110 24.97 (ii) Percent of label claim ± SD 99.7 ± 0.17 99.54 ± 0.26 99.89 ± 0.19 (iii)
-test 1.73 1.71 1.12 (iv)
-test 1.38 2.33 1.11 (2)
-Chloranil (i) Amount found 3.104 3.134 24.80 (ii) Percent of label claim ± SD 99.35 ± 0.15 100.3 ± 0.15 99.2 ± 0.13 (iii)
-test 1.73 1.55 2.37 (iv)
-test 1.77 1.28 1.91
*Mean of four determinations.
a Intas Pharma, b Zydus (C&D), c Cipla Ltd. Values of
at 95% confidence level = 3.182. Values of
at 95% confidence level = 6.39.