| D007306 |
Insecticides |
Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics. |
Insecticide |
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| D008745 |
Methylation |
Addition of methyl groups. In histo-chemistry methylation is used to esterify carboxyl groups and remove sulfate groups by treating tissue sections with hot methanol in the presence of hydrochloric acid. (From Stedman, 25th ed) |
Methylations |
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| D009596 |
Nitrophenols |
PHENOLS carrying nitro group substituents. |
Nitrophenol |
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| D010278 |
Parathion |
A highly toxic cholinesterase inhibitor that is used as an acaricide and as an insecticide. |
E-605,Ethyl Parathion,Phosphostigmine,Thiofos,Thiophos,Parathion, Ethyl |
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| D010756 |
Phosphoric Acids |
Inorganic derivatives of phosphoric acid (H3PO4). Note that organic derivatives of phosphoric acids are listed under ORGANOPHOSPHATES. |
Pyrophosphoric Acids,Acids, Phosphoric,Acids, Pyrophosphoric |
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| D002621 |
Chemistry |
A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange. |
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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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| D013057 |
Spectrum Analysis |
The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) |
Spectroscopy,Analysis, Spectrum,Spectrometry |
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| D013237 |
Stereoisomerism |
The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) |
Molecular Stereochemistry,Stereoisomers,Stereochemistry, Molecular,Stereoisomer |
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| D013440 |
Sulfides |
Chemical groups containing the covalent sulfur bonds -S-. The sulfur atom can be bound to inorganic or organic moieties. |
Sulfide,Thioether,Thioethers,Sulfur Ethers,Ethers, Sulfur |
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