Acid-base (PH) indicator

BCECF is a pH-sensitive fluorescent dye and a cytosolic pH indicator. It can be used for detecting intracellular pH levels.

Pyranine (Solvent Green 7) is reported as a new class of fluorescent chemosensor for the Cu+ ion.

Neutral red is a vital dye, is used as an indicator and biological stain.

Phenol Red (Sulfonphthal) is a pH indicator, red dye, and diagnostic aid for measurement of renal function. It is used also for researches of the gastrointestinal and other systems.

9-Aminoacridine is a highly fluorescent anti-infective dye used clinically as a topical antiseptic and experimentally as a mutagen, due to its interaction with DNA. It is also used as an intracellular pH indicator.

Indigo carmine (NSC-8646) is an indolesulfonic acid. It is used as a dye in renal function testing for the detection of nitrates and chlorates.

Acid Yellow 36 (Metanil Yellow) is an azo dye and pH indicator, changing color from red at pH 1.2 to yellow at pH 2.3.

Xylenolblue (p-Xylenol Blue) is an acid-base indicator used as an intermediate in chemical synthesis.

Cresol Red sodium is a useful organic compound for research related to life sciences. The catalog number is T66428 and the CAS number is 62625-29-0.

Bromocresol Purple (sodium), commonly referred to as Bromocresol Purple, is a sodium salt of bromocresol purple. This water-soluble dye functions as a pH indicator, transitioning in color from yellow to purple between pH 5.2 and 6.8.

Aminacrine hydrochloride is a highly fluorescent anti-infective dye. It is also used as an intracellular pH indicator.

3,6-diacetoxy Phthalonitrile is a fluorescent probe for monitoring intracellular pH by flow cytometry in living cells. It rapidly crosses cell membranes and is cleaved by cytosolic esterases to form the fluorescent pH indicator 2,3-dicyano-hydroquinone (DCH), which is excited at UV wavelengths. DCH can be excited at 351 nm, with pH-dependent emission in the range of 450-476 nm (pH 5.0-10.0) using a potassium-based buffer.

DND-189 is a low-pH fluorescent probe sensitive to both neutral and low pH ranges. It is useful for measuring the pH of acidic organelles [1] [2].

Chlorophenol red (Dichlorophenolsulphonephthalein) serves as a multifunctional dye with extensive applications in both scientific and industrial sectors. Within biological experiments, it facilitates the observation and analysis of cell structures, aids in tracking biomolecules, evaluating cell functions, distinguishing cell types, detecting biomolecules, studying tissue pathology, and monitoring microorganisms. Its uses extend beyond basic research to include clinical diagnostics. Furthermore, Chlorophenol red is employed in traditional industries like textile dyeing and emerging sectors such as functional textile processing, food pigments, and dye-sensitized solar cells.

DHPDS disodium salt, a pH-sensitive fluorescent dye, is utilized to measure intracellular pH (pHi) from the surface fluorescence of the isolated perfused rat liver [1].

Aminacrine hydrochloride monohydrate, a highly fluorescent anti-infective dye, is used as a topical antiseptic and mutagen due to its interaction with DNA. It is also used as an intracellular pH indicator.

Phenol Red sodium salt is a water-soluble pH indicator used in the range from 6.8 (yellow) to 8.2 (red).

Sodium 4-(3-(4-hydroxy-5-isopropyl-2-methylphenyl)-1,1-dioxido-3H-benzo[c][1,2]oxathiol-3-yl)-2-isopropyl-5-methylphenolate is a useful organic compound for research related to life sciences. The catalog number is T66669 and the CAS number is 62625-21-2.

5-(6)-Carboxy RhodFluor is a cell-impermeant pH indicator.

Bromochlorophenol Blue sodium salt is an acid-sensitive dye and functions as a pH indicator.

Caged fluorescent pH indicator

Chromoionophore I (ETH 5294), a hydrophobic pH indicator, functions as a transmissive or fluorescent probe molecule in various hydrophobic sensor membranes. It is oil-soluble [1].

The cell-permeant pH indicator, carboxy SNARF-1, acetoxymethyl ester, acetate (CAS #126208-13-7) has a pKa of ~7.5 after de-esterification, thus is useful for measuring pH changes between pH 7 and pH 8. Carboxy-SNARF-1 exhibits a significant pH-dependent

2-(7-Hydroxy-2-oxo-2H-chromen-4-yl)acetic acid is a useful organic compound for research related to life sciences. The catalog number is T65277 and the CAS number is 6950-82-9.