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Inosinic Acid

A purine nucleotide which has hypoxanthine as the base and one phosphate group esterified to the sugar moiety.

Quinestrol

The 3-cyclopentyl ether of ethinyl estradiol.

Imazaquin

Aniracetam

Compound with anti-depressive properties used as a mental performance enhancer.

2,5-di-tert-butylhydroquinone

Dibromothymoquinone

At low concentrations, this compound inhibits reduction of conventional hydrophilic electron acceptors, probably acting as a plastoquinone antagonist.

Tanaproget

It is a high affinity, high efficacy agonist of the progesterone receptor (PR) with a much more selective binding profile relative to most conventional progestins. … It is currently in the process of being developed for clinical use as a contraceptive by Ligand Pharmaceuticals.

Virginiamycin S1

It is used to treat infections with gram-positive organisms and as a growth promoter in cattle, swine, and poultry. … One of the components of virginiamycin, a cyclic polypeptide antibiotic complex from streptomyces virginiae, s. Loidensis, s. Mitakaensis, s. Pristina-spiralis, s. Ostreogriseus, and others.

Bithionol

Bithionol, formerly marketed as an active ingredient in various topical drug products, was shown to be a potent photosensitizer with the potential to cause serious skin disorders.

Methapyrilene

Methapyrilene, formerly marketed in many drug products, was shown to be a potent carcinogen. Manufacturers voluntarily withdrew methapyriline drug products from the market in May and June 1979.