Hexestrol is a carcinogenic synthetic estrogen that inhibits microtubule polymerization and the formation of ribbon structures. Hexestrol is also an inhibitor of lipid peroxidation.

Hexestrol is a carcinogenic synthetic estrogen that inhibits microtubule polymerization and the formation of ribbon structures. Hexestrol is also an inhibitor of lipid peroxidation.

Halofuginone is a coccidiostat used in veterinary medicine. It is a synthetic halogenated derivative of febrifugine, a natural quinazolinone alkaloid which can be found in the Chinese herb Dichroa febrifuga. Halofuginone inhibits the development of T helper28cells, immune cells that play an important players in autoimmune disease, but it does not affect other kinds of […]

Spiramycin is a macrolide antibiotic. It is used to treat toxoplasmosis and various other infections of soft tissues. Although used in Europe, Canada and Mexico, spiramycin is still considered an experimental drug in the United States, but can sometimes be obtained by special permission from the FDA for toxoplasmosis in the first trimester of pregnancy.

Sirolimus is used in combination with other medications to prevent rejection of kidney transplants. Sirolimus is in a class of medications called immunosuppressants. It works by suppressing the body’s immune system.

Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. It is unclear if it is effective for treating sexual dysfunction in women. It is taken by mouth or by injection into a vein. Onset is typically within twenty minutes and lasts for about […]

Saxitoxin dihydrochloride is an amorphous hygroscopic solid. Saxitoxin is a neurotoxin that acts as a selective, reversible, voltage-gated sodium channel blocker. One of the most potent known natural toxins, it acts on the voltage-gated sodium channels of neurons, preventing normal cellular function and leading to paralysis.

Tylosin is a macrolide antibiotic and bacteriostatic feed additive used in veterinary medicine. It has a broad spectrum of activity against Gram-positive organisms and a limited range of Gram-negative organisms. It is found naturally as a fermentation product of Streptomyces fradiae.

Trimethoprim (TMP) is an antibiotic used mainly in the treatment of bladder infections. Other uses include for middle ear infections and travelers’ diarrhea. With sulfamethoxazole or dapsone it may be used for Pneumocystis pneumonia in people with HIV/AIDS. It is taken by mouth. Common side effects include nausea, changes in taste, and rash. Rarely it […]

SN-38 is an antineoplastic drug. It is the active metabolite of irinotecan but has 1000 times more activity than irinotecan itself. In vitro cytotoxicity assays show that the potency of SN-38 relative to irinotecan varies from 2- to 2000-fold.