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Diflubenzuron is an insecticide of the benzoylurea class. [2] It is used in forest management and on field crops [ 3 ] to selectively control insect pests, particularly forest tent caterpillar moths , boll weevils , gypsy moths , and other types of moths . [ 1 ]
Chemical structure of diflubenzuron, a commonly used benzoylurea insecticide. Benzoylureas (BPUs) are chemical derivatives of N-benzoyl-N ′-phenylurea, which are used as insecticides. [1] They do not directly kill the insect, but disrupt moulting and egg hatch, and thus act as insect growth regulators.
Vigilante is an insecticide used with both dairy and beef cattle to reduce the number of flies in an agricultural area. It is usually formatted as a 50-gram bolus containing 9.7% diflubenzuron, [1] an insect growth regulator which inhibits the formation of chitin and prevents insects from reproducing. [2]
Insect growth regulator (IGR) is a term coined to include insect hormone mimics and an earlier class of chemicals, the benzoylphenyl ureas, which inhibit chitin (exoskeleton) biosynthesis in insects [42] Diflubenzuron is a member of the latter class, used primarily to control caterpillars that are pests.
Flufenoxuron is an insecticide that belongs to the benzoylurea chitin synthesis inhibitor group, which also includes diflubenzuron, triflumuron, and lufenuron. [1] Flufenoxuron is a white crystalline powder. It is insoluble in water, is not flammable, and is not an oxidizer.
Bioactivity of novaluron is usually much greater than that of insecticides diflubenzuron and teflubenzuron and the compound is at least as active as other insecticides from its developmental generation, for example chlorofluazuron and lufenuron. [11]
Structure of N-benzoyl-N′-phenylurea was first determined in 2010. [1] Molecules in this compound are approximately flat and exhibit high charge delocalization. Within the molecule an intramolecular N−H⋅⋅⋅O hydrogen bond is present forming pseudoaromatic 6-membered ring. [2]
Commercial greenhouses typically employ the insect growth regulator diflubenzuron for control of fungus gnats and their larvae. It is applied to infected soil and will kill fungus gnat larvae for 30–60 days from a single application.