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US 3,940,416 AGranted
Benzimidazole sulphonyl chlorides
AssigneeFisons Limited
InventorsJohn Roger Corbett, Albert Percival
Life of this patent
Estimating the term…
Abstract
2-Trifluoromethylbenzimidazoles having a sulphamoyl or substituted sulphamoyl substituent on the benzene ring combat mammalian parasites, for example liver fluke in mammals e.g. sheep, and cattle tick and sheep blowfly.
Claims6
A benzimidazole sulphonyl chloride of the formula:
- ##SPC8##
- wherein R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represent halogen.
Dependencies are inferred from the claim text.