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Qu'est-ce (qui) est isothiocyanate - définition

SALT OR ESTER OF ISOTHIOCYANIC ACID

Isothiocyanates; Sulfocarbimide

isothiocyanate

[???s?(?)?????(?)'s???ne?t]

¦ noun Chemistry a compound containing the group ?N=C=S as a substituent or ligand.

Fluorescin

SYNTHETIC ORGANIC COMPOUND USED AS DYE AND FLUORESCENT TRACER

Fluorescein sodium; Fluorescin; Fluoresceins; Fluorescein-5-isothiocyanate; C.I. 45350; Japan yellow 201; Angiofluor; Resorcinolphthalein; Soap yellow; Solvent yellow 94; Sodium fluorescein; Flourescein; C20H12O5; Uranine; ATC code S01JA01; ATCvet code QS01JA01; Acid Yellow 73; Funduscein-25; Uranin; Fluorescine; Uranine yellow; Sodium fluorescent; Fluorescein dye

·noun A colorless, amorphous substance which is produced by the reduction of fluorescein, and from which the latter may be formed by oxidation.

Fluorescein

SYNTHETIC ORGANIC COMPOUND USED AS DYE AND FLUORESCENT TRACER

Fluorescein sodium; Fluorescin; Fluoresceins; Fluorescein-5-isothiocyanate; C.I. 45350; Japan yellow 201; Angiofluor; Resorcinolphthalein; Soap yellow; Solvent yellow 94; Sodium fluorescein; Flourescein; C20H12O5; Uranine; ATC code S01JA01; ATCvet code QS01JA01; Acid Yellow 73; Funduscein-25; Uranin; Fluorescine; Uranine yellow; Sodium fluorescent; Fluorescein dye

·noun A yellowish red, crystalline substance, C₂₀H₁₂O₅, produced by heating together phthalic anhydride and resorcin;

- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin.

Wikipédia

Isothiocyanate

In organic chemistry, isothiocyanate is the functional group −N=C=S, formed by substituting the oxygen in the isocyanate group with a sulfur. Many natural isothiocyanates from plants are produced by enzymatic conversion of metabolites called glucosinolates. These natural isothiocyanates, such as allyl isothiocyanate, are also known as mustard oils. An artificial isothiocyanate, phenyl isothiocyanate, is used for amino acid sequencing in the Edman degradation.

Cruciferous vegetables, such as bok choy, broccoli, cabbage, cauliflower, kale, and others, are rich sources of glucosinolate precursors of isothiocyanates. Although there has been some basic research on how isothiocyanates might exert biological effects in vivo, there is no high-quality evidence to date for its efficacy against human diseases.

https://en.wikipedia.org/wiki/Isothiocyanate

Exemples du corpus de texte pour isothiocyanate

1. The researchers said that sulforaphane is the main isothiocyanate derived from broccoli and the "super broccoli" variety contains 3.4 times more of the compound than standard types.

2. In a Jan. 23, 2004, memo, an agency official wrote that tests conducted on the wood preservative methyl isothiocyanate, which was sprayed into some volunteers‘ eyes, showed "little concern for the safety or welfare of the research subjects. . . . Nonetheless I am aware of no barrier in current law or agency policy to your giving this study full consideration in your risk assessment." The agency did rely on the study in the end, and it decided in August to make exposure limits for methyl isothiocyanate several times stricter than they had been.