Pesticides

Crotamiton is an enamide resulting from the formal condensation of crotonic acid with N-ethyl-2-methylaniline. A colourless or pale yellow oily liquid, it is used in the treatment of pruritus (itching) by producing a counter-irritation: as it evaporates from the skin, it produces a cooling effect that diverts attention away from the itching. It has also been used as an acaricide in the treatment of scabies, though more effective drugs are usually preferred. It has a role as an antipruritic drug and a scabicide. It is an enamide and a tertiary carboxamide.

Osthol is a substance extracted from the fruit of Fructus Cnidii, an annual herb in Umbelliferae. It has antispasmodic, hypotensive, antiarrhythmic, enhancing immune function and broad-spectrum antibacterial effects. Clinically, it is mainly used to treat male impotence, scrotal wet itching, female vaginal itching, uterine cold infertility, rheumatic arthralgia, scabies wet sore and trichomonal vaginitis. Osthol can also be used as a field insecticide and bactericide. It mainly has contact killing effect, supplemented by gastric toxicity. The drug solution is absorbed into the insect body through the body surface and acts on the insect nervous system, resulting in the non functional contraction of the insect muscle and eventually exhaustion and death. It has a good contact killing effect on a variety of pests such as cabbage worm, tea inchworm, cotton bollworm, beet armyworm and various aphids.

Isoprothiolane is a dithiolane pesticide. Isoprothiolane is commonly used in agriculture as a fungicide to control planthoppers and blast disease in rice plants.

This product is an oily sesquiterpenol from plants, with anti-inflammatory and antibacterial activities. It can be used as pharmaceutical and chemical raw materials.

Fenvalerate is a broad-spectrum, efficient and rapid pyrethroid. It is mainly contact killing and stomach toxicity, has no internal absorption effect, and is ineffective for mites. It is effective for Lepidoptera larvae, Orthoptera, Hemiptera and Diptera pests. It is used to control cotton aphids, leaf cicadas, stink bugs, leaf curlers, Pieris rapae, soybean heartworm, wheat slime insect, red bollworm, cotton bollworm and citrus leaf miner larvae.