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. 2022 Oct 7;11(10):1993. doi: 10.3390/antiox11101993

Figure 1.

Figure 1

Chemical structure of ascorbic acid. The marked carbon atoms are important for the antioxidant properties: the carbon atoms with hydroxyl group in positions 2, 3, 5, and 6; and double bonds between carbon atoms in positions 2 and 3.