Development and Validation of a Method for the Quantification of an Alkaloid Fraction of Himatanthus lancifolius (Muell. Arg.) Woodson by Ultraviolet Spectroscopy

Figure 1

Selectivity of the method developed for the alkaloid fraction of H. lancifolius (30 μg/mL) (a) with yohimbine hydrochloride (22 μg/mL) as reference (b) and the methanol as solvent (c) observed between 200 and 400 nm.