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

^(a)Average of three determinations ± SD.