Image Number 13 for United States Patent #6225023.
A sulfonamide compound of the formula (1): ##STR1##wherein X is a hydrogen atom, an alkyl or alkoxy group which may be substituted, or a halogen atom, Y Is an alkyl group having at least two fluorine atoms, and each of R.sup.1 and R.sup.2 which are independent of each other, is an alkyl group which may be substituted, or R1 may be bonded to X or R.sup.2 to form a ring.
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