n
Alternative spelling of allyl isothiocyanate [(organic chemistry) A mildly toxic pungent compound, C₃H₅NCS, obtained from the seeds of black mustard (Brassica nigra) or prepared synthetically, used as an animal repellent, etc.]
n
(chemistry) A complex anion, containing vanadium, found in some species of Amanita mushrooms
n
A balsamic resin from the bark of Styrax trees used in perfumes, incense, and medicine; benzoin resin.
adj
Pertaining to, or obtained from, benzoin.
n
The spicebush, Lindera benzoin.
n
(organic chemistry) Any compound whose structure is that of a porphyrin with one or more benzene rings fused to its pyrrole rings.
n
Alternative form of bromocresol purple [(organic chemistry) A sulfonephthalein derived from a brominated derivative of cresol; it is used as an acid-base indicator]
n
A fluorescent dye produced by the reaction of bromine with fluorescein.
n
A dye used in various medical tests of liver function. Abbreviated to BSP.
n
Alternative form of bromsulphthalein [A dye used in liver function tests.]
n
(organic chemistry) Any of a family of dyes having a structure containing two quinoline groups connected by a bridge of conjugated single- and double bonds
n
(organic chemistry) Any carboxy derivative of eosin, but especially 5(6)-carboxyeosin whose diacetate is used as a fluorescent dye
n
Any of a group of dyestuffs resembling chrysoidine.
n
(chemistry) Alternative form of calumbin [(organic chemistry) A bitter white crystalline substance extracted from the calumba root (Jateorhiza palmata).]
n
(chemistry) A derivative of phenolphthalein used as a pH indicator
adj
Describing a group of quinolinic phthalocyanine dyes that contain copper
n
(organic chemistry) A blue dye used in the laboratory analysis of photosynthesis
n
(chemistry) any epihalohydrin in which the halogen is bromine
n
(organic chemistry) A decomposition product of chlorophyll.
n
(organic chemistry) A phenolic chromenone based on (2S)-5,7-dihydroxy-2-(4-hydroxyphenyl)-6,8-dimethyl-2,3-dihydrochromen-4-one
n
(organic chemistry) A fluorescent substance obtained from the bark of Fraxinus excelsior, the European ash tree, and formerly used to treat fever.
n
(chemistry) any of a class of photochromic cyclic acid anhydrides of dialkylidenesuccinic acid.
n
(organic chemistry) An explosive isomer of cyanuric acid
n
(organic chemistry) Any of a group of oligocyclic derivatives of furan, especially (4S,5E,7S,10E)-7,11-dimethyl-4-propan-2-yl-14-oxabicyclo[11.2.1]hexadeca-1(15),5,10,13(16)-tetraen-7-ol
n
(organic chemistry) gitoxigenin hydrate
n
(organic chemistry) Any of a group of dyes that can detect reactive oxygen species, reacting to form cyanine
n
(organic chemistry) A bicyclic heterocycle, 3,7-dihydropurin-6-one, that is an intermediate in the biosynthesis of uric acid.
n
(organic chemistry) An indigo-forming substance found in urine and other animal fluids, and convertible into red and blue indigo (urrhodin and uroglaucin); an indoxyl sulphate of potash.
n
(organic chemistry) The synthetic dye indigotin used to replace natural indigo
n
(organic chemistry) A dark blue compound that is the principal dye in indigo
n
(organic chemistry) A brown amorphous substance resembling humin, and obtained from indican.
n
(organic chemistry) A dark red crystalline substance, isomeric with and resembling indigo blue, and obtained from isatide and dioxindol.
n
(organic chemistry) A substance isomeric with, and resembling, indigo blue; a component of Tyrian purple
n
(organic chemistry) Any derivative of indirubin, especially one present in Tyrian purple
n
(organic chemistry) A substance resembling indigo blue, obtained artificially from certain isatogen compounds.
n
(organic chemistry) A dark resinous substance, polymeric with indol, obtained by the reduction of indigo white.
n
(organic chemistry) Any of a class of blue or green dyes produced by oxidation of phenols and aromatic diamines
n
(organic chemistry) An indocarbocyanine connected by an unsaturated chain of seven carbon atoms
n
Alternative form of induline [(organic chemistry) Any of a series of blue, bluish-red and black dyestuffs, formed by the interaction of para-amino azo compounds with primary monoamines in the presence of a small quantity of a mineral acid.]
n
(organic chemistry) Any of a series of blue, bluish-red and black dyestuffs, formed by the interaction of para-amino azo compounds with primary monoamines in the presence of a small quantity of a mineral acid.
n
(organic chemistry) Any of various colourless cyanide compounds that are readily converted to coloured forms, most often by exposure to light.
n
(organic chemistry) An organic base obtained by the distillation of coal tar.
n
(organic chemistry) The phenothiazine dye 3-N,3-N,7-N,7-N-tetramethyl-10H-phenothiazine-3,7-diamine
n
(chemistry) A heterogeneous catalyst consisting of palladium deposited on calcium carbonate which is then poisoned with various forms of lead or sulphur. It is used for the hydrogenation of alkynes to alkenes.
n
(chemistry) An azo dye used as an acid-base indicator for titrations involving a weak base
n
(obsolete, chemistry) A poorly-characterized nitrogenous material formed from several ureids
n
A white crystalline hydrocarbon manufactured from coal tar; used in mothballs.
n
a red dyestuff obtained from certain diazo derivatives of naphthylamine
n
a yellow dyestuff obtained from certain nitro derivatives of naphthol
n
(organic chemistry) A complex, nitrogenous, organic base and black dyestuff
n
A mixture of synthetic black dyes made by heating a mixture of nitrobenzene, aniline and aniline hydrochloride in the presence of a copper or iron catalyst; used for staining of bacteria and as a colorant.
n
An iodine compound obtained as a yellowish-grey powder by the action of iodine on phenolphthalein.
n
(organic chemistry) Synonym of oligoether
n
(chemistry) Any ester of phosphoric acid or its derivatives, especially one used as an insecticide or herbicide.
n
(organic chemistry) Any oxidised form of a purine, such as hypoxanthine, xanthine or uric acid
n
(chemistry) persulphocyanic acid
n
(chemistry) A colouring matter produced by the action of a mixture of strong nitric acid and sulphuric acid on phenylic alcohol.
n
(organic chemistry) Phenol red, a pH indicator much used in cell biology.
n
(organic chemistry) Any of a family of macrocyclic compounds having a structure similar to that of porphyrin; they are blue/green pigments that are used in plastics and enamels.
n
(chemistry) 2,4,6-trinitrophenol, C₆H₂(NO₂)₃, prepared by the nitration of phenol or of aspirin; a toxic, yellow, explosive substance used in dyes, explosives, and as an antiseptic
n
(chemistry) C₈H₅N₅O₆, a nitrogenous acid that yields alloxan and uramil when hydrolysed, known for its purple salts.
n
(chemistry) a yellow food colouring now known to be toxic and banned in some countries
n
(photography) A black-and-white developing agent based on the chemical 4-aminophenol.
n
(organic chemistry) A solid form of resin, obtained from liquid resin by vaporizing its volatile components.
n
(organic chemistry) A macrocycle, analogous to porphyrin, containing five pyrrole residues
n
(organic chemistry) A C-sulfate derivative of indocyanine that is a fluorescent dye
n
Any derivative of a rhodamine formed by adding one or more sulfonate groups. Often used as fluorescent dyes.
n
(obsolete, medicine) An aluminium salt of tannic acid (and sometimes also tartaric acid) used in various preparations
n
(organic chemistry) A coenzyme in methanogenesis, related to tetrahydrofolic acid.
n
Alternative spelling of thymolsulphonephthalein [Thymol blue, a brownish-green or reddish-brown crystalline powder used as a pH indicator.]
n
Thymol blue, a brownish-green or reddish-brown crystalline powder used as a pH indicator.
n
(organic chemistry) Any of a group of cyanine dyes, in which two heterocycles are connected by a =CH−CH=CH−CH=CH−CH=CH− bridge, the central three carbon atoms being part of a cyclopentadiene ring
n
(organic chemistry) Indigo red, a product of the decomposition or oxidation of indican, sometimes found in the sediment of pathological urines.
n
(chemistry) An induline dyestuff made from aniline and formerly used as a substitute for indigo in dyeing wool and silk.
n
N,N,N′,N′-tetramethyl-p-phenylenediamine, an easily oxidized phenylenediamine whose radical cation is a characteristic blue-violet colour.
n
(organic chemistry) The compound 9-oxo-xanthene that is the basis of many natural products and insecticides
n
(organic chemistry) An organic reagent, most commonly used as a tetrasodium salt as an indicator for metal titrations.
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