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Disperse Fast Yellow 4K (Disperse Yellow) is a color additive used in dyes.

Fast Blue B Salt, a fat-soluble and phenolic compound-binding dye, serves for semi-quantitative analysis of alkylresorcinols in rye and forms a colored precipitate upon acetone exposure [1]. It also demonstrates affinity for diazonium compounds.

Fast Green free acid is a dye that resists acid once applied.

Fast Green FCF (FD&C Green No. 3), a safe biocompatible color additive, has been suggested to mitigate chronic pain.

C.I. Direct Red 1, disodium salt is a dye.

C.I. Direct Black 17 is a compound of dye.

Perflubron (Perfluorooctyl bromide) can be emulsified with egg phospholipids (EYP) and displays exceptionally fast excretion characteristics. Perflubron(1-Bromoheptadecafluorooctane; Heptadecafluorooctyl bromide; Perfluorooctyl bromide) is a contrast medium for magnetic resonance imaging and sonography.

C.I. Food Yellow 10, also known as Fast Yellow AB or Acid Yellow, is an azo dye used primarily as a food dye that is now delisted in both Europe and USA and is forbidden if used in foods and drinks. Ungraded products supplied by Spectrum are indicative of

Hydrogen sulfide (H2S) is an important gaseous mediator, like nitric oxide, that has significant effects on the immunological, neurological, cardiovascular and pulmonary systems of mammals. WSP-5 is a reactive disulfide-containing, fluorescent probe designed for fast detection of H2S in biological samples and cells. Through a reaction-based fluorescent turn-on strategy, WSP-5 selectively and rapidly reacts with H2S, generating a fluorophore with excitation and emission maxima of 502 and 525 nm, respectively. WSP-5 demonstrates a faster fluorescence turn-on rate (60- vs. 130-fold) and a more sensitive detection limit (47 vs. 60 nM) toward H2S compared to WSP-1 .

Fuchsine base monohydrochloride (Rosaniline Base monohydrochloride) is a magenta dye and uses for acid-fast staining with carbol-fuchsin.

N-Decanoyl p-nitroaniline (DepNA) is one of several nitroaniline fatty acid amides which can be used to measure fatty acid amide hydrolase (FAAH) activity. FAAH is a relatively unselective enzyme in that it accepts a variety of amide head groups other than the ethanolamine of its endogenous substrate anandamide (AEA). It also will hydrolyze fatty acid amides with fewer carbons and fewer double bonds than arachidonate. Exposure of DepNA to FAAH activity results in the release of the yellow colorimetric dye p-nitroaniline (ε = 13,500 at 410 nm). This allows the fast and convenient measurement of FAAH activity using a 96 well plate spectrophotometer.

BODIPY-TS (also known as Thiol-green 2) is a highly efficient thiol-specific turn-on probe with a fast response. It incorporates a thiosulfonate scaffold as its thiol recognition unit. BODIPY-TS displays excellent selectivity, low detection limit, and quantitative reactivity towards thiols. Moreover, it exhibits low toxicity. Notably, BODIPY-TS exhibits excitation at 490 nm and emission at 515 nm.

HMBR are not fluorescent by themselves, but when combined with Y-FAST, they emit yellow light when excited by blue light.