A compound of xanthogen (xanthogen, n. 1).

Chemistry. The essential constituent of idrialite, C42H28O, forming colourless scales which melt at a very high temperature.

a glairy organic substance found in many mineral waters after exposure to the air.

‘A compound containing the elements of violuric and dilituric acids’ (Watts).

A colourless crystalline compound which is a condensation product of two guanidine molecules with the loss of a molecule of ammonia…

(See quot. 1890.)

A colourless compound of carbon, nitrogen, and hydrogen, N4CH2=NCH.NH N = N, having acidic properties, crystallizing in lustrous prisms or plates.

Any of a class of compounds resembling oxazoles but with the CH:CH part of the oxazole ring replaced by CO·CH2; spec. the parent compound C3H3NO2.

(a) (With lower-case initial.) Indanthrone, C28H14N2O4 (in quot. 1921 used for the oxygen-free parent compound, C28H18N2: cf. quot. 1920). (b)…

Formerly, the name given to any supposed compound of silicon analogous to the ketones, having a formula RR′SiO (R, R′ being organic radicals); in…

any of a class of dark blue polymeric complexes, a number of which have anti-tumour activity, which are formed by divalent platinum with amide…

a monohydroxy derivative, C10H20O2, of citronellal, prepared synthetically and used extensively in perfumery to give the odour of lily of the valley.

any compound in which three of the four hydrogen atoms of methane are replaced by halogens.

A colourless oily liquid compound with a cyclic tetrameric structure, [(CH3)2SiO]4, that is an intermediate in the manufacture of many silicones.

Any of a class of stable compounds of carbon, fluorine, and chlorine, analogous to the hydrocarbons, which are used as refrigerants and aerosol…

A synthetic pyrethroid used as an insecticide, parasiticide, and pediculicide; 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid…

chlorofluorocarbon.