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Pharmaceutical intermediates, feed additives

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Tacrolimus is an immunosuppressant medication used to prevent organ rejection in transplant patients. It is also available as a topical medication to treat skin conditions. Tacrolimus works by suppressing the immune system, and it is available in various forms such as capsules, tablets, injections, and ointments. Common side effects include headaches, nausea, diarrhea, high blood pressure, and tremors, and more severe side effects can occur.

Ivermectin is an antiparasitic medication used to treat infections caused by roundworms, threadworms, scabies, and lice. It is also used in veterinary medicine to treat heartworms and other parasites. It has been recently controversially suggested as a treatment for COVID-19, but its efficacy is not yet confirmed.

In recent years, new fluorine-containing pyridine pesticides have the advantages of broad-spectrum systemic absorption, high efficiency and low toxicity, and low pollution, and have become the backbone varieties of high-efficiency insecticides, herbicides and fungicides. 2,3-Dichloro-5-trifluoromethylpyridine (2,3,5-DCTF) is a key intermediate in the production of these novel pesticides