| 摘要 |
<p>Benzimidazoline salts of formula (I): Rn(?) (I) wherein: Rn(+) represents a cation having a valency of n, n being an integer from 1 to 3: R1 represents halo or triflueromethyl; R2 represents hydrogen or C1-4 alkyl; and R3 represents hydrogen, or fluoro or C1-3 fluoroalkyl, have been found to be effective ectoparasiticides.</p> |
