TCPy

TCPy or 3,5,6-trichloro-2-pyridinol is a cyclic hydrocarbon, specifically a chlorinated version of 2-pyridone.

Pesticides can be a precursor to TCPy. TCPy is a metabolite of the herbicide triclopyr, and of the insecticides chlorpyrifos and chlorpyrifos-methyl. A study in Massachusetts reported a correlation between exposure to TCPy and lower testosterone levels in men. According to this source, exposure is "widespread" and of "potential public health importance".

References

1. Pest control
2. Permethrin
3. Boric acid
4. Prallethrin
5. Metofluthrin
6. Bifenthrin
7. 1-Naphthol
8. Carbaryl
9. Dinotefuran
10. Pyrethrum
11. List of Schedule I controlled substances (U.S.)
12. Deltamethrin
13. Piperonyl butoxide
14. DDT
15. Spinosad
16. Tetramethrin
17. Pyrethroid
18. Neonicotinoid
19. Allethrins
20. Cyhalothrin