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Imidazole is an organic compound with the formula C3H4N

Infrared (IR) spectroscopy is an analytical technique used to characterise atomic groups (e.g., CH, C=C, C=O, C(=O)NH2, OH) of organic compounds absorbing electromagnetic radiation particularly in the 4 000–400 cm-1 wavenumber (0.25–25 μm wavelength) range.

Several inorganic nickel compounds were tested for mutagenicity in various test systems.

The data collectively show that nickel compounds are generally inactive in bacterial assays, but active in systems using eukaryotic organisms, and that positive responses were observed regardless of the nickel compounds used; particularly when these were compared at equitoxic concentrations (Hansen & Stern, 1983; Swierenga & McLean, 1985).

Any of a group of organic compounds containing two ..

(1980) Fourier transform infrared spectroscopy for inorganic compound speciation.

PREVIOUS EVALUATIONS BY INTERNATIONAL BODIES The carcinogenic risk of nickel and inorganic nickel compounds has been evaluated by the International Agency for Research on Cancer (IARC).

In vitro studies have demonstrated that nickel compounds cause (a) DNA damage in a wide variety of organisms, (b) mutagenicity, possibly related to cytotoxicity, in mammalian cells, and (c) clastogenicity and morphological transformation in mammalian cells including human cells.

of endogenous organic compounds …

(1982) Inorganic compound identification of fly ash emissions from municipal incinerators.

The most common methods include wet digestion, i.e., oxidation of organic matter by reagents, such as nitric acid, sulfuric acid, perchloric acid, or hydrogen peroxide, or combinations of these compounds, and dry ashing, which ensures oxidation of organic matter by the action of oxygen and high temperatures.

The relative amounts of nickel absorbed by an organism are determined, not only by the quantities inhaled, ingested, or administered, but also by the physical and chemical characteristics of the nickel compound.

Nickel compounds are used as catalysts in the manufacture of organic chemicals, petroleum refining, and edible oil hardening.
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How did organic compounds appear on the early Earth

powder 344 rats 5 monthly doses of pleural cavity in (1973) 5 mg/animal 2 out of 10 ratsNickel Fischer ip, 16 injections 30-50% Furst &powder 344 rats twice monthly, 5 mg/ intraperitoneal Cassetta animal tumours (1973)Nickel Fischer Intrathoracic 40% mesothelioma Furst &powder 344 rats 5 monthly doses, of Cassetta 5 mg/animal (1973)---------------------------------------------------------------------------------------------------------Table 30 (contd.)---------------------------------------------------------------------------------------------------------Nickel Animals Routea Tumours Comments Reference compound --------------------------------------------------------------------------------------------------------- Ni(CO)4 Sprague- iv, 6 x 50 µl/kg 19/21 rats with Lau et al.

Latest definition of organic compounds - buy definition …

Tissue distribution Parameters, such as the nickel compound administered, the dose, the number of administrations, the length of time between exposure and sacrifice, the strain of animal, and the route of absorption, may strongly influence the organ distribution pattern.

scent of disease: volatile organic compounds of the …

During 2-4 h following exposure of rats or rabbits to nickel carbonyl, the lung was the major excretory organ for the compound (Sunderman & Selin , 1968; Mikheyev, 1971).

The scent of disease: volatile organic compounds of the human body ..

Sunderman (1983b) and Gilman & Yamashiro (1985) reviewed experimental data on factors influencing the carcinogenetic activity of nickel subsulfide and other nickel compounds, including species and strain, susceptibility of organs, route of administration, physical form of nickel compound, and dose-response characteristics.

Glossary | Linus Pauling Institute | Oregon State University

Tautomers are isomers of organic compounds that readily interconvert by a chemical reaction called tautomerism. This commonly results in the migration of a hydrogen atom, accompanied by a switch of a single bond and an adjacent double bond.

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