Cholesterol

Cholesterol(cas.57-88-5)from the Greek chole- (bile) and stereos (solid) followed by the chemical suffix -ol for an alcohol, is an organic chemical substance classified as a waxy steroid of fat. It is an essential structural component of mammalian cell membranes and is required to establish proper membrane permeability and fluidity.

Diglycolamine

Diglycolamine(cas.929-06-6) is colorless transparent liquid,slightly viscous,with typical mild amine odor.Miscible with water,alcohols, aromatic hydrocarbons etc. but immiscible with ethyl ether,aliphatic hydrocarbons.

Diethyl phthalate

Diethyl phthalate (DEP) is a phthalate ester, namely the diethyl ester of phthalic acid. It is a clear substance that is liquid at room temperature and is only slightly denser than liquid water. It has a faint, disagreeable odor and can be transferred from the plastics that contain it. When burned, DEP produces toxic gases.

Metronidazole

Metronidazole(cas.443-48-1)is white crystalline powder. Melting point 158-160. Soluble in water, slightly soluble in ethanol, slightly soluble in water or chloroform, slightly soluble in ether. Taste bitter and slightly salty.

Calcium Carbonate

Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone, which contains both of those minerals) and is the main component of pearls and the shells of marine organisms, snails, and eggs. Calcium carbonate is the active ingredient in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale.

imidazole

Imidazole(cas.288-32-4) is white crystal,Weakly alkaline.Soluble in water, ethanol, ethyl ether, chloroform and pyridine, slightly soluble in benzene, hardly soluble in petroleum ether

Phosphorous acid

Phosphorous acid is the compound described by the formula H3PO3. This acid is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is an intermediate in the preparation of other phosphorus compounds.

Dimethyl fumarate

Dimethyl fumarate (CAS 624-49-7) is a new atmosphere-type anti-mildew agent, referred to as DMF. Under normal temperature, it is white crystalline powder, melting point 102 ~ 104 ℃, specific gravity 1.37, slightly soluble in water, can be dissolved in ethyl acetate, chloroform and alcohol, and with sublimation.