Research Article
Spectrophotometric Determination of N-Acetyl-L-Cysteine and N-(2-Mercaptopropionyl)-Glycine in Pharmaceutical Preparations
Table 3
Accuracy (recovery, %) of the proposed method for the determination of NAC and MPG in two pharmaceutical formulations.
| Sample | Added μg mL−1 | Found(a)μg mL−1 | Recovery % |
| Fluimukan (NAC) | 0.0 | 200.1 ± 0.4 | Not applicable | 50.0 | 249.1 ± 1.6 | 98.2 | 100.0 | 301.2 ± 1.8 | 101.2 | 150.0 | 348.2 ± 2.1 | 98.8 | 200.0 | 404.4 ± 2.2 | 102.2 |
| Captimer (MPG) | 0.0 | 100.2 ± 0.6 | Not applicable | 50.0 | 149.3 ± 1.1 | 98.6 | 100.0 | 198.4 ± 1.3 | 98.4 | 150.0 | 252.5 ± 2.4 | 101.7 | 200.0 | 303.9 ± 3.1 | 101.9 |
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(a)Average of three determinations ± SD.
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