Utility of Charge Transfer and Ion-Pair Complexation for Spectrophotometric Determination of Eletriptan Hydrobromide in Pure and Dosage Forms

Table 1

Comparison between the reported spectrophotometric methods for determination of ELT.

	Reagent	𝜆max; nm	Concentration; range; (μg mL^−1)	LOD; (μg mL^−1)	Remarks	Reference
(1)	(a) First-order derivative spectrophotometry	215	5.0–25	0.119	Shorter wavelength	[8]
	(b) Second-order derivative spectrophotometry	236	5.0–25	0.347
(2)	UV-spectrophotometry	221	2.0–10	0.9883	Shorter wavelength	[9]
(3)	UV-spectrophotometry	219	5.0–25	NR	Shorter wavelength	[10]
(4)	7,7,8,8 Tetracyanoquinodimethane (TCNQ)	744	10–70	4.38	Less sensitive, heating required	[11]
(5)	7-Chloro-4-nitrobenzofurazan	480	30–250	0.07	Less sensitive, heating and time required	[12]
(6)	Quinz	569	2.0–18	0.359	Simple, rapid, sensitive, selective and no heating step involved	Proposed methods
	ARS	533	1.0–8.0	0.215
	Mo(V)-thiocyanate	470	2.0–32	0.332

NR: not reported.