Sensitive Spectrophotometric Method for Quantitation of Guaifenesin and Dropropizine in Their Dosage Forms

Table 2

Statistical analysis of the results obtained by applying the proposed, reported and manufacturer methods for the analysis of GF and DR in their dosage forms.

Preparation	Proposed	Reported	Manufacturer
Muclear	100.34 ± 0.89*	101.18 ± 0.76	—
	𝐹 = 2.71	—
	𝑡 = 0.55	—
Standard addition	99.39 ± 1.36**
Tussapine	100.29± 0.76*	—	100.23± 0.84
	𝐹 =1.55		—
	𝑡 = 0.33		—
Standard addition	100.60 ± 1.05**

∗Mean of nine determinations (three conc. each in triplet).
∗∗Mean of six determinations (two for each of conc.).