Mesotrione

Mesotrione
Names
	IUPAC name 2-(4-mesyl-2-nitrobenzoyl)cyclohexane-1,3-dione
	Preferred IUPAC name 2-[4-(Methylsulfonyl)-2-nitrobenzoyl]cyclohexane-1,3-dione
	Other names ZA1296
Identifiers
CAS Number	104206-82-8 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:38321 ;
ChemSpider	153301 ;
ECHA InfoCard	100.111.661
PubChem CID	175967;
UNII	48TR68G21T ;
CompTox Dashboard (EPA)	DTXSID7032424 ;
	InChI InChI=1S/C14H13NO7S/c1-23(21,22)8-5-6-9(10(7-8)15(19)20)14(18)13-11(16)3-2-4-12(13)17/h5-7,13H,2-4H2,1H3 Key: KPUREKXXPHOJQT-UHFFFAOYSA-N ;
	SMILES CS(=O)(=O)c1ccc(c(c1)[N+](=O)[O-])C(=O)C2C(=O)CCCC2=O;
Properties
Chemical formula	C14H13NO7S
Molar mass	339.32 g·mol−1
Appearance	Yellow to tan coloured solid
Density	1.49 g/cm3
Melting point	165.3 °C (329.5 °F; 438.4 K)
Solubility in water	1500 mg/L (20 °C)
log P	0.11
Acidity (pKa)	3.12
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H410
Precautionary statements	P273, P391, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Mesotrione is a selective herbicide used mainly in maize crops and has also been shown to have weak insecticidal properties. It is a synthetic compound inspired by the natural substance leptospermone found in the bottlebrush tree Callistemon citrinus. It inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD) and is sold under brand names including Callisto and Tenacity. It was first marketed by Syngenta in 2001.