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Hydrocarbons with at least one triple bond in the linear portion, of the general formula Cn-H2n-2.

A urea hydantoin that is found in URINE and PLANTS and is used in dermatological preparations.

Antigen-type substances that produce immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE).

Extracts of allergens, or purified allergens that have been chemically modified to reduce their ability to induce IGE-MEDIATED HYPERSENSITIVITY (alle…

Synthetic analogs of the naturally occurring insecticides cinerin, jasmolin, and pyrethrin. (From Merck Index, 11th ed)

An enzyme that catalyzes the hydrolysis of allophanic acid to two molecules of ammonia plus two molecules of active carbon dioxide. EC 3.5.1.54.

A XANTHINE OXIDASE inhibitor that decreases URIC ACID production. It also acts as an antimetabolite on some simpler organisms.

Acidic compound formed by oxidation of URIC ACID. It is isolated as an efflorescent crystalline hydrate.

A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.

Alkenes with the general formula H2C=CH-CH2-R.

Possesses an unusual and selective cytotoxicity for VASCULAR SMOOTH MUSCLE cells in dogs and rats. Useful for experiments dealing with arterial injur…

Compounds that include a single 1-phenyl-2-propene moiety in their structure.

A synthetic steroid with progestational activity.

An inhibitor of glutamate decarboxylase and an antagonist of GAMMA-AMINOBUTYRIC ACID. It is used to induce convulsions in experimental animals.

An allylic compound that acts as a suicide inactivator of CYTOCHROME P450 by covalently binding to its heme moiety or surrounding protein.

A respiratory stimulant that enhances respiration by acting as an agonist of peripheral chemoreceptors located on the carotid bodies. The drug increa…

Glycoprotein found in alpha(1)-globulin region in human serum. It inhibits chymotrypsin-like proteinases in vivo and has cytotoxic killer-cell activi…

Plasma glycoprotein member of the serpin superfamily which inhibits TRYPSIN; NEUTROPHIL ELASTASE; and other PROTEOLYTIC ENZYMES.

A catenin that binds F-ACTIN and links the CYTOSKELETON with BETA CATENIN and GAMMA CATENIN.

Nucleocytoplasmic transport molecules that bind to the NUCLEAR LOCALIZATION SIGNALS of cytoplasmic molecules destined to be imported into the CELL NU…

A member of the serpin superfamily found in plasma that inhibits the lysis of fibrin clots which are induced by plasminogen activator. It is a glycop…

A fetuin subtype that is synthesized by HEPATOCYTES and secreted into the circulation. It plays a major role in preventing CALCIUM precipitation in t…

A cyclic octapeptide with a thioether bridge between the cystine and tryptophan. It inhibits RNA POLYMERASE II. Poisoning may require LIVER TRANSPLAN…

An IBOTENIC ACID homolog and glutamate agonist. The compound is the defining agonist for the AMPA subtype of glutamate receptors (RECEPTORS, AMPA). I…

Enzymes that catalyze the endohydrolysis of 1,4-alpha-glycosidic linkages in STARCH; GLYCOGEN; and related POLYSACCHARIDES and OLIGOSACCHARIDES conta…

A chlorinated PROPANEDIOL with antifertility activity in males used as a chemosterilant in rodents.

One of the subunits of alpha-crystallins. Unlike ALPHA-CRYSTALLIN B CHAIN the expression of ALPHA-CRYSTALLIN A CHAIN is limited primarily to the lens…

One of the alpha crystallin subunits. In addition to being expressed in the lens (LENS, CRYSTALLINE), alpha-crystallin B chain has been found in a va…

A subclass of crystallins that provides the majority of refractive power and translucency to the lens (LENS, CRYSTALLINE) in VERTEBRATES. Alpha-cryst…

Cyclic GLUCANS consisting of six (6) glucopyranose units linked by 1,4-glycosidic bonds.