| D002776 |
Cholestanes |
Derivatives of the saturated steroid cholestane with methyl groups at C-18 and C-19 and an iso-octyl side chain at C-17. |
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| D002849 |
Chromatography, Gas |
Fractionation of a vaporized sample as a consequence of partition between a mobile gaseous phase and a stationary phase held in a column. Two types are gas-solid chromatography, where the fixed phase is a solid, and gas-liquid, in which the stationary phase is a nonvolatile liquid supported on an inert solid matrix. |
Chromatography, Gas-Liquid,Gas Chromatography,Chromatographies, Gas,Chromatographies, Gas-Liquid,Chromatography, Gas Liquid,Gas Chromatographies,Gas-Liquid Chromatographies,Gas-Liquid Chromatography |
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| D003461 |
Crystallography |
The branch of science that deals with the geometric description of crystals and their internal arrangement. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
Crystallographies |
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| D001597 |
Benzylidene Compounds |
Compounds which include a double-bonded carbon atom that is directly attached to a benzene ring. While this category is named after the highly reactive compound benzylidene, the compounds listed under it occur through a variety of synthetic pathways. |
Benzylidene Compound,Benzylidene Derivative,Benzylidene Derivatives,Phenylmethylene Derivative,Phenylmethylene Derivatives,Compound, Benzylidene,Compounds, Benzylidene,Derivative, Benzylidene,Derivative, Phenylmethylene,Derivatives, Benzylidene,Derivatives, Phenylmethylene |
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| D001647 |
Bile Acids and Salts |
Steroid acids and salts. The primary bile acids are derived from cholesterol in the liver and usually conjugated with glycine or taurine. The secondary bile acids are further modified by bacteria in the intestine. They play an important role in the digestion and absorption of fat. They have also been used pharmacologically, especially in the treatment of gallstones. |
Bile Acid,Bile Salt,Bile Salts,Bile Acids,Acid, Bile,Acids, Bile,Salt, Bile,Salts, Bile |
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| D013256 |
Steroids |
A group of polycyclic compounds closely related biochemically to TERPENES. They include cholesterol, numerous hormones, precursors of certain vitamins, bile acids, alcohols (STEROLS), and certain natural drugs and poisons. Steroids have a common nucleus, a fused, reduced 17-carbon atom ring system, cyclopentanoperhydrophenanthrene. Most steroids also have two methyl groups and an aliphatic side-chain attached to the nucleus. (From Hawley's Condensed Chemical Dictionary, 11th ed) |
Steroid,Catatoxic Steroids,Steroids, Catatoxic |
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| D014052 |
Toluidines |
Any of three isomeric compounds (ortho-, meta-, and para-) containing a benzene ring with a methyl and amino group attached to it. They are suspected CARCINOGENS. |
Aminotoluene |
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