Syngenta AG (SYT)

(1) Capitalized interest

Syngenta does not capitalize interest on constructed assets, as it is not required by IFRS. In accordance with US GAAP, interest costs incurred during the construction period (i.e. the period of time necessary to bring a constructed fixed asset to the condition and location necessary for its intended use) must be capitalized and amortized over the useful life of the asset. Under US GAAP, Syngenta would have capitalized US$3 million, US$1 million and US$5 million of interest costs that were expensed for IFRS reporting purposes for the years ended December 31, 2005, 2004 and 2003 respectively. This amount is net of amortization expense of US$3 million, US$3 million and US$2 million respectively.

(1) Capitalized interest

Syngenta does not capitalize interest on constructed assets, as it is not required by IFRS. In accordance with US GAAP, interest costs incurred during the construction period (i.e., the period of time necessary to bring a constructed fixed asset to the condition and location necessary for its intended use) must be capitalized and amortized over the useful life of the asset. Under

F-75

US GAAP, Syngenta would have capitalized US$nil million, US$5 million and US$1 million of interest costs that were expensed for IFRS reporting purposes for the years ended December 31, 2004, 2003 and 2002 respectively. This amount is net of amortization expense of US$3 million, US$2 million and US$4 million respectively.