New Product – Penthiopyrad

Date – Januray 31,  2013
Title – New product – Penthiopyrad

Chem Service –

Penthiopyrad is a very new Succinate dehydrogenase inhibitor (SDHI) fungicide, used to control rust, Rhizoctonia diseases, powdery mildew and others.  DuPont has completed supply agreements with Mitsui Chemicals Inc. for the this product in 2007 and began marketing two products containing penthiopyrad Fontelis and Vertisan in 2011.  Penthiopyrad belongs to the Fungicide Resistance Action Committee’s Group 7, carboxamides.  It is awaiting approval from the EC Directive 1107/2009 yet Canada has granted registration approval in November, 2011, US EPA registration in March, 2012, and The California Department of Pesticide Regulation in January, 2013.

Penthiopyrad has been assigned CAS #183675-82-3.

Its formula is C16H20F3N3OS

M.P. 180°C

IUPAC name is (RS)-N-[2-(1,3-Dimethylbutyl)-3-thienyl]-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxamide

Penthiopyrad reference standard is now available from Chem Service  part number N-17917-50MG

penthiopyrad structure