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. 2021 Mar 23;11(8):2537–2564. doi: 10.1016/j.apsb.2021.03.030

Figure 13.

Figure 13

(A) Degradation mechanism of NCD in different environments: acidic and alkaline. (B) Distance between the nitrogen atom (N1) of the pyridine ring and the carbon atom (C8) of the ethyl group in the crystal structure of NCD (CCDC 1161948). (C) The content of NCD remained after hydrothermal stability testing. (D) Summary and comparison of the shortest distances between N1 and C8 in NCD and each cocrystal. Adapted from the Ref. 101 with the permission. Copyright © 2020 American Chemical Society.