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TCPy

Names
IUPAC name 3,5,6-Trichloro-1H-pyridin-2-one
Identifiers
CAS Number	6515-38-4
3D model (JSmol)	Interactive image
ChemSpider	21541
ECHA InfoCard	100.026.733
PubChem CID	23017
CompTox Dashboard (EPA)	DTXSID7038317
InChI InChI=1S/C5H2Cl3NO/c6-2-1-3(7)5(10)9-4(2)8/h1H,(H,9,10)Key: WCYYAQFQZQEUEN-UHFFFAOYSA-N InChI=1/C5H2Cl3NO/c6-2-1-3(7)5(10)9-4(2)8/h1H,(H,9,10)Key: WCYYAQFQZQEUEN-UHFFFAOYAM
SMILES O=C1C(Cl)=CC(Cl)=C(Cl)N1
Properties
Chemical formula	C5H2Cl3NO
Molar mass	198.43 g·mol
Density	1.67g/cm
Melting point	172-174°C
Boiling point	254.8°C @760mmHg
Hazards
Flash point	107.9°C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Y verify (what is  ?) Infobox references

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".

References

1. Meeker, John D.; Ryan, Louise; Barr, Dana B.; Hauser, Russ (2006). "Exposure to Nonpersistent Insecticides and Male Reproductive Hormones". Epidemiology. 17 (1): 61–68. doi:10.1097/01.ede.0000190602.14691.70. PMID 16357596.{{cite journal}}: CS1 maint: multiple names: authors list (link)

• Organochlorides
• 2-Pyridones