Fast blue B salt

Cobalt (II) thiocyanate Diazotization and a-naphthol coupling Ehrlich reagent Fast Blue B Salt... 

Fast Blue B salt (diazonium) A 0.5% aqueous solution of Fast Blue B Salt is sprayed on the plate followed by a 0.1 M sodium hydroxide. 

Fast Blue B Solution a 1 % solution of fast blue B salt (diazotised o-dianisidme) It should be freshly prepared Ferric Ammonium Sulphate Solution a 10% solution of feme ammonium sulphate... 

FBB ammonia vapors followed by 0.05% aqueous fast blue B salt. Colours bl = blue, br = brown, och = ochre, or = orange, r = red, rsh = reddish, v = violet, y = yellow. 

Fast Blue B Cannabinoids Sodium hydroxide solution Fast Blue B salt Chloroform Bright red... 

The chief substances in Fig. 201 can be quantitatively determined by either spraying the chromatogram with alkali and the Fast Blue B salt mentioned or by visualisation with blue tetrazolium (Firm 88) [125, 126] in each case the zones are than scraped off, eluted with acetic acid-methanol (1 + 1) and the solution evaluated photometrically in the visible spectral region. 

The layer is prepared by mixing silica gel GF245 (Merck) with 0.3 M sodium acetate solution, spreading into layers of about 250 pm thickness. Development is carried out twice to a height of 10 cm in a saturated chamber atmosphere, using chloroform-methanol (85 + 15). The spots are visualised by spraying with 10 ml of a freshly prepared 0.5% aqueous solution of Fast Blue B salt, followed some minutes later with a few ml of aqueous sodium hydroxide to intensify the colours. 

Fast Blue B Salt (diazonium reagent) for phenols and amines which can... 

Organophosphates, thiocarbamates, carbamates, carbamoyloximes, dithiocarbamates, and ureas were included among 100 pesticides and metabolites detected on TLC plates by their cholinesterase inhibiting properties. After developing the plates in ether, xylene, di-n-butyl ether, n-butyl acetate or methyl-isobutyl ketone, the plates were exposed to bromine vapor. The compounds were oxidized to their oxo derivatives, which exhibited more effective cholinesterase inhibitory activity. Bovine liver suspension served as enzyme source and the substrates 2-naphthyl acetate and Fast Blue B salt as the chromogenic agents (163a). 

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