Sensitive Spectrophotometric Determinations of Paracetamol and Protriptyline HCl Using 3-Chloro-7-hydroxy-4-methyl-2H-chromen-2-one

Table 3

Result of assay of formulation by the proposed method.

Drug	Trade name	Labeled amount; (mg)	Found ± SD using
Paracetamol	Paracetamol	500	506.76 ± 0.46; 𝑡=0.53
Protriptyline HCl	Vivactil	10	10.05 ± 0.73; 𝑡=0.15

∗Mean value of five determinations.
Tabulated 𝑡 value at 95% confidence level is 2.7.