Ultraviolet absorption of flavonoids
The ionization constants of the 5-hydroxy groups in tectochrysin and chrysin have been determined spectrophotometrically, being 2.09×10−12 and 8.91×10−10, respectively. The 7-hydroxy group of chrysin has an ionization constant of 3.8 × 10−8.
KeywordsFlavonoid Flavone Phloroglucinol Chrysin Ionization Constant
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