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. Author manuscript; available in PMC: 2023 Apr 5.
Published in final edited form as: Front Environ Sci. 2022 Apr 5;10:1–13. doi: 10.3389/fenvs.2022.850019

FIGURE 9 |.

FIGURE 9 |

Examples of alkenic fluorinated chain and ring systems that do not fit the EPA TSCA 2021 PFAS substructure definition. The first two do not fit any PFAS structural definition.