Drospirenone and ethinyl estradiol combination is used to prevent pregnancy. It is a birth control pill that contains two types of hormones, ethinyl estradiol and drospirenone, and when taken properly, prevents pregnancy. It works by stopping a woman's egg from fully developing each month. The egg can no longer accept a sperm and fertilization (pregnancy) is prevented.

Quinine sulfate dihydrate (QNS), IUPAC name: (8S,9R)-6-methoxy-4-quinolenyl-5-vinyl-2-quinuclidinyl methanol sulfate dihydrate, was tested as corrosion inhibitor for carbon steel in 1.5 mol L−1 HCl solution using the potentiodynamic polarization and the electrochemical impedance spectroscopy (EIS) associated with UV-Vis spectrophotometry.

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Phenyl chloroformate appears as a colorless liquid with a strong odor. Toxic by ingestion, inhalation and skin absorption. Very irritating to skin and eyes. Used to make other chemicals.

The method for the preparation of phenyl chloroformate which comprises adding to a solution of phosgene in at least one solvent selected from the group consisting of pentane, hexane, heptane, benzene, toluene and xylene, a slurry containing anhydrous sodium phenolate in at least one material selected from the group

Hydroxyacetophenones are conveniently converted into the corresponding 1,3- dioxolanes by treatment 

with ethanediol and tri-isopropyl orthoformate in the presence of catalytic cerium triflate, 

Phthalic anhydride is widely used worldwide for an extremely broad range of applications spanning from the plastics industry to the synthesis of resins, agricultural fungicides and amines. Its production is currently based on the vapor phase oxidation of o-xylene and naphthalene.

Polyvinyl alcohol (PVOH, PVA, or PVAl) is a synthetic polymer which is both colourless, odourless and water-soluble. It was initially discovered in the early 1920's and since has been used in numerous applications from the lamination of safety glass to the packaging of laundry detergents.

It is obtained as a byproduct of wine manufacture during the fermentation process. Approved by the FDA as a direct food substance, potassium bitartrate is used as an additive, stabilizer, pH control agent, antimicrobial agent, processing aid, or thickener in various food products.

Propyl 4-hydroxybenzoate (PHB), is a p-hydroxybenzoate derivative. It can be prepared by reacting p-hydroxybenzoic acid with n-propanol in the presence of an acidic ionic liquid.It crystallizes in the monoclinic space group P21/c.It is reported to be an endocrine disrupting compound.

Quercetin impact on lipid bilayers suggests a dual action mechanism at cell membranes. This widespread polyphenol displays high partition with low interference in the more fluid membrane domains, more vulnerable to oxidative attack, but strong perturbation of cholesterol/sphingolipid enriched domains, where signalling platforms are expected to assemble.

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an alkaloid derived from the bark of the cinchona tree. it is used as an antimalarial drug, and is the active ingredient in extracts of the cinchona that have been used for that purpose since before 1633. quinine is also a mild antipyretic and analgesic and has been used in common cold preparations for that purpose. it was used commonly and as a bitter and flavoring agent, and is still useful for the treatment of babesiosis.