Fig. (1A) Time-course of degradation of deoxyribose in the presence of 1a-4a and quercetin (5) (200 µM) using 50 µM H₂O₂.^*Each absorbance (Abs) (λ=532 nm) is the average of three parallel measurements ± standard error. Details of incubation and derivatization is written in the Materials and Methods part.