|Jmol-3D images||Image 1|
|Molar mass||198.43 g mol−1|
|Melting point||172 to 174 °C (342 to 345 °F; 445 to 447 K)|
|Boiling point||254.8 °C (490.6 °F; 528.0 K) at 760 mmHg|
|Flash point||107.9 °C (226.2 °F; 381.0 K)|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
TCPy or 3,5,6-trichloro-2-pyridinol is a metabolite of chlorpyrifos and chlorpyrifos-methyl, both organophosphate insecticides. 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".