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Tetramethylene :: Tetramethylene (n.) A hypothetical hydrocarbon, C4H8, analogous to trimethylene, and regarded as the base of well-known series or derivatives..

Thienone :: Thienone (n.) A ketone derivative of thiophene obtained as a white crystalline substance, (C4H3S)2.CO, by the action of aluminium chloride and carbonyl chloride on thiophene..

Behove :: Behove (v.) and derivatives. See Behoove, &c..

Flavaniline :: Flavaniline (n.) A yellow, crystalline, organic dyestuff, C16H14N2, of artifical production. It is a strong base, and is a complex derivative of aniline and quinoline..

Xylamide :: Xylamide (n.) An acid amide derivative of xylic acid, obtained as a white crystalline substance..

Pentamethylene :: Pentamethylene (n.) A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene..

Pyrrol :: Pyrrol (n.) A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red..

Thionine :: Thionine (n.) An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet..

Niteosaccharin :: Niteosaccharin (n.) An explosive nitro derivative of certain sugars, analogous to nitroglycerin, gun cotton, etc..

Xanthide :: Xanthide (n.) A compound or derivative of xanthogen.

Xylorcin :: Xylorcin (n.) A derivative of xylene obtained as a white crystalline substance which on exposure in the air becomes red; -- called also betaorcin.

Derivative :: Derivative (n.) A substance so related to another substance by modification or partial substitution as to be regarded as derived from it; thus, the amido compounds are derivatives of ammonia, and the hydrocarbons are derivatives of methane, benzene, etc..

Tartronyl :: Tartronyl (n.) A hypothetical radical constituting the characteristic residue of tartronic acid and certain of its derivatives.

Toluidine :: Toluidine (n.) Any one of three metameric amido derivatives of toluene analogous to aniline, and called respectively orthtoluidine, metatoluidine, and paratoluidine; especially, the commonest one, or paratoluidine, which is obtained as a white crystalline substance..

Pentyl :: Pentyl (n.) The hypothetical radical, C5H11, of pentane and certain of its derivatives. Same as Amyl..

Orthocarbonic :: Orthocarbonic (a.) Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4..

Flavol :: Flavol (n.) A yellow, crystalline substance, obtained from anthraquinone, and regarded as a hydroxyl derivative of it..

Roccellin :: Roccellin (n.) A red dyestuff, used as a substitute for cochineal, archil, etc. It consists of the sodium salt of a complex azo derivative of naphtol..

Thionaphthene :: Thionaphthene (n.) A double benzene and thiophene nucleus, C8H6S, analogous to naphthalene, and like it the base of a large series of derivatives..

Naphthylamine :: Naphthylamine (n.) One of two basic amido derivatives of naphthalene, C10H7.NH2, forming crystalline solids..

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