Simple Analytical Method on the Determination of Dexamethasone in Herbal Medicine

Table 1

Optimization of conditions and time for the formation of the dexamethasone-hydroxylamine complex.

Time for reflux	Variations of hydroxylamine hydrochloride
	10 mg	20 mg	30 mg
30 min	44.06% ± 1.10	82.18% ± 1.70	73.27% ± 2.1
60 min	46.47% ± 2.37	98.40% ± 0.55	78.03% ± 2.27
120 min	54.95% ± 1.01	92.80% ± 1.18	81.93% ± 0.95