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Azo dyes, Pharmaceuticals

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Dyes (1)
PH indicators (1)

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AK Scientific (1)
Oakwood Chemical (1)
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TCI Chemicals (1)

Methyl red (493-52-7)  
methyl red, sodium salt  ·  C.I. Acid Red 2
Methyl red (2-(N,N-dimethyl-4-aminophenyl) azobenzenecarboxylic acid), also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder.

Related Results:
TRIPHENYLMETHANE (519-73-3)  
Triphenylmethane, or triphenyl methane, is the hydrocarbon with the formula (C6H5)3CH. This colorless solid is soluble in nonpolar organic solvents and not in water. Triphenylmethane is the basic skeleton of many synthetic dyes called triarylmethane dyes, many of them are pH indicators, and some display fluorescence.
Leucomalachite green (129-73-7)  
4,4'-benzylidenebis(N,N-dimethylaniline)
Malachite green is an organic compound that is used as a dyestuff and controversially as an antimicrobial in aquaculture. Malachite green is traditionally used as a dye for materials such as silk, leather, and paper. Despite its name the dye is not prepared from the mineral malachite, and the name just comes from the similarity of color.
28631-66-5 (8004-91-9, 28631-66-5)  
aniline blue  ·  water blue
Tetrabromophenol blue (4430-25-5)  
Bromophenol Blue  ·  Bromphenol Blue
Tropaeolin O (547-57-9)  
AO6 dye  ·  Acid Orange 6
Chrysoine resorcinol is a synthetic azo dye which was formerly used as a food additive. In Europe, it was banned as a food additive in 1977. In the US, it was banned in 1988.
Carbocyanine (605-91-4)  
pinacyanol  ·  pinacyanol chloride  ·  quinaldine blue iodide
Pinacyanol chloride (2768-90-3)  
pinacyanol  ·  quinaldine blue iodide  ·  quinaldine blue tosylate
3-BROMOPHENOL (591-20-8)  
meta-bromophenol
Bromothymol blue (76-59-5)  
Bromthymol Blue  ·  Dibromothymolsulfonphthalein
Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near 7). A common use is for measuring the presence of carbonic acid in a liquid.
2-BROMOPHENOL (32762-51-9, 95-56-7)  
o-bromophenol  ·  ortho-bromophenol
Solvent Blue 36 (14233-37-5)  
1,4-bis(isopropylamino)anthraquinone  ·  Oil Blue A
Oil Blue A is a blue anthraquinone dye used for colouring certain plastics such as polystyrene and acrylic resins, as well as other materials such as petroleum and inks. It has good resistance to light.
Cresol red (1733-12-6)  
o-cresolsulfonphthalein  ·  Cresol red, monosodium salt
Cresol red (full name: o-cresolsulfonephthalein) is a triarylmethane dye frequently used for monitoring the pH in aquaria.
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