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. 2021 Aug 31;26(17):5278. doi: 10.3390/molecules26175278

Scheme 8.

Scheme 8

(a) Proposed mechanism of proton-coupled electron transfer in the 320 nm photochemistry of aqueous PA by Guzman et al. [80]; (b) crystal structure of the dimer of pyruvic acid with (light blue) intermolecular hydrogen bonds, which indicates a (green) distance of 8.337 Å for the oxygen atoms in the carbonyl centers of the crystal structure [81].