Mesotrione is an herbicide sold under the brand names Callisto and Tenacity that was brought to market by Syngenta in 2001. It is a synthetic analog of leptospermone developed to mimic the effects of this natural herbicide. Mesotrione is a member of the class of HPPD inhibitors, which all work by inhibiting the plant enzyme 4-hydroxyphenylpyruvate dioxygenase. In plants, HPPD is necessary for carotenoid biosynthesis; carotenoids in turn protect chlorophyll from being degraded by sunlight. When an HPPD inhibitor is sprayed on a plant, it prevents carotenoid from being made, chlorophyll degrades and the plant dies.

CAS：104206-82-8
中文别名：甲基磺草酮;2-(2-硝基－4-甲磺酰基苯加酰)环己烷-1,3-二酮;2-(4-甲磺酰基-2-硝基苯甲酰基)环己烷-1,3-二酮;
英文别名：2-(4-mesyl-2-nitrobenzoyl)cyclohexane-1,3-dione;2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione;2-[4-(methanesulfonyl)-2-nitrobenzoyl]cyclohexane-1,3-dione;Mesotrione 100g/L SC;Messotrione;Mesotrione 480g/l sc;Mesotrione;MESOTRION;MESOTRION,PESTANAL;
分子式：C14H13NO7S
分子量：339.321
精确质量：339.041
Psa：139.55
Logp：2.7233

UNII：48TR68G21T

密度：1.474g/cm3
沸点：643.3ºC at 760mmHg
熔点：165ºC
闪点：342.9ºC
折射率：1.583
储存条件：0-6ºC
蒸汽压：1.93E-16mmHg at 25°C

安全说明：S60-S61
危险类别码：R50/53
海关编码：2914700090
危险品运输编码：UN 3077
危险品标志：N