Triclopyr

Triclopyr
Names
	Preferred IUPAC name [(3,5,6-Trichloropyridin-2-yl)oxy]acetic acid
	Other names 3,5,6-TPA; Trident (Agriphar)
Identifiers
CAS Number	55335-06-3 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:9682 ;
ChemSpider	37801 ;
ECHA InfoCard	100.054.161
PubChem CID	41428;
UNII	MV06PHJ6I0 ;
CompTox Dashboard (EPA)	DTXSID0032497 ;
	InChI InChI=1S/C7H4Cl3NO3/c8-3-1-4(9)7(11-6(3)10)14-2-5(12)13/h1H,2H2,(H,12,13) Key: REEQLXCGVXDJSQ-UHFFFAOYSA-N ; InChI=1/C7H4Cl3NO3/c8-3-1-4(9)7(11-6(3)10)14-2-5(12)13/h1H,2H2,(H,12,13) Key: REEQLXCGVXDJSQ-UHFFFAOYAE;
	SMILES ClC1=C(OCC(O)=O)N=C(Cl)C(Cl)=C1; C1=C(C(=NC(=C1Cl)Cl)OCC(=O)O)Cl;
Properties
Chemical formula	C7H4Cl3NO3
Molar mass	256.46 g·mol−1
Appearance	Fluffy solid
Melting point	148 to 150 °C (298 to 302 °F; 421 to 423 K)
Solubility in water	440 mg/L
Solubility in acetone	989 g/kg
Acidity (pKa)	2.68
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Triclopyr, also Trichlopyr, formally [(3,5,6-trichloropyridin-2-yl)oxy]acetic acid, is an organic compound in the pyridine family of herbicides that is used as a systemic foliar type of herbicide and, secondarily, as a fungicide. Triclopyr is an acetic acid derivative, and so a monocarboxylic acid, with a pyridyloxy substituent: specifically, a pyridin-2-yloxy group substituted by chloro groups at positions 3, 5, and 6. It functions as an herbicide by mimicking the action of the plant growth hormone auxin.