2,2 ', 4' - trichloroacetophenone is used as an intermediate in pesticides and pharmaceuticals, mainly for the production of drugs such as miconazole nitrate, econazole nitrate, and osiconazole nitrate.

Polymyxin B is a cationic surfactant antibiotic that is a mixture of polymyxin B1 and B2, which can improve the permeability of cell membranes. Almost odorless, sensitive to light, easily soluble in water, slightly soluble in ethanol. Mainly used for wounds, urinary tract, eye, ear, and tracheal infections caused by Pseudomonas aeruginosa and other pseudomonas, it can also be used for sepsis and peritonitis.

Oseltamivir phosphate is a neuraminidase inhibitor used as an antiviral drug for the prevention and treatment of influenza.

Tadalafil is a selective reversible inhibitor of cyclic guanosine monophosphate specific phosphodiesterase 5, which works by inhibiting 5-phosphodiesterase.

Acycloguanosine is a synthetic base analog with the chemical formula of C8H11N5O3. It is mainly used for various infections caused by herpes simplex virus, and can be used for initial or recurrent skin, mucosa, external genital infection, and HSV infection in people with immune deficiency. It is the first choice drug for treating HSV encephalitis. It is better than adenosine arabinoside in reducing incidence rate and mortality. It can also be used for herpes zoster, EB virus, and varicella in people with immune deficiency.

4-Hydroxypyrazolo[3,4-d]pyrimidine, also known as allopurinol, is an organic compound with the chemical formula C5H4N4O, mainly used as an anti gout drug.

1-Adamantanamine hydrochloride is an antiviral drug with anti influenza virus activity, mainly used as an anti Parkinson's disease drug. Amantadine prevents protons from passing through the M2 ion channel (the M2 proton channel of influenza A), thereby preventing the release of viral RNA into the cytoplasm of infected cells.

Aminophylline is an organic compound with the chemical formula C16H24N10O4. It is a competitive non selective phosphodiesterase inhibitor and a smooth muscle relaxant and diuretic.

Amiodarone HCL is an organic compound with the molecular formula C25H30ClI2NO3.

Ammonium chloride, as a non-polar compound that regulates pH, can cause intracellular alkalization and metabolic acidosis, thereby affecting enzyme activity and the processes of biological systems. Ammonium chloride is an autophagy inhibitor.

Amoxicillin is an organic compound with the chemical formula C16H19N3O5S. It is an antibiotic drug, also known as amoxicillin, belonging to the penicillin family of the amino penicillin class. It is a white or off white crystalline powder with a slightly specific odor and bitterness. It is the main variety of second-generation penicillin and a broad-spectrum semi synthetic antibiotic that can inhibit the synthesis of bacterial cell walls. It has efficient broad-spectrum antibacterial effects with minimal toxic side effects and is commonly used to treat bacterial infections.

Amoxicillin is an organic compound with the chemical formula C16H19N3O5S. It is an antibiotic drug, also known as amoxicillin, belonging to the penicillin family of the amino penicillin class. It is a white or off white crystalline powder with a slightly specific odor and bitterness. It is the main variety of second-generation penicillin and a broad-spectrum semi synthetic antibiotic that can inhibit the synthesis of bacterial cell walls. It has efficient broad-spectrum antibacterial effects with minimal toxic side effects and is commonly used to treat bacterial infections.