Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)
The principal alkaloid in opium and the prototype opiate analgesic and narcotic. Morphine has widespread effects in the central nervous system and on smooth muscle
Sulfur-sulfur bond isomerases that catalyze the rearrangement of disulfide bonds within proteins during folding. Specific protein disulfide-isomerase isoenzymes also occur as subunits of PROCOLLAGEN-PROLINE DIOXYGENASE
A flammable, poisonous gas with a characteristic odor of rotten eggs. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. (From Merck Index, 11th ed)
Sulfides -- chemistry : Nanoscale materials in chemistry : environmental applications / Larry E. Erickson, Ranjit T. Koodali, Ryan M. Richards, editors ; sponsored by the ACS Division of Industrial & Engineering Chemistry
2010
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Sulfides -- Metallurgy. : Microbial processing of metal sulfides / edited by Edgardo R. Donati and Wolfgang Sand
2007
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Sulfides -- Toxicity testing : Toxicologic assessment of the Army's zinc cadmium sulfide dispersion tests (Summary report)
A polysaccharide with glucose units linked as in CELLOBIOSE. It is the chief constituent of plant fibers, cotton being the purest natural form of the substance. As a raw material, it forms the basis for many derivatives used in chromatography, ion exchange materials, explosives manufacturing, and pharmaceutical preparations
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Sulfites -- Solubility. : Sulfites, selenites and tellurites / volume editor Mary R. Masson ; co-editors H.D. Lutz, B. Engelen
Sulfonamides -- Synthesis : Selectivity in the synthesis of cyclic sulfonamides : application in the synthesis of natural products / Kimberly Geoghegan
