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pH indicator

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34

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23

Fluorescent Dye

7

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Cat. No. Product Name Target Research Areas Chemical Structure
  • HY-D0169A
    Phenol Red sodium salt

    pHenolsulfonepHthalein sodium salt

    		 Fluorescent Dye Others
    Phenol red (Phenolsulfonephthalein) sodium salt is a pH indicator dye, relying on a distinct color change from pink to yellow in case of a positive reaction .
    Phenol Red sodium salt
  • HY-D0023
    Pyranine
    1 Publications Verification

    HPTS; Solvent Green 7

    		 Fluorescent Dye Others
    Pyranine (HPTS; Solvent Green 7) is a pH-sensitive fluorescent indicator. Pyranine acts as a class of fluorescent chemosensor for the Cu + ion(λex=450 nm, λem=510 nm) .
    Pyranine
  • HY-D0252
    m-Cresol purple

    		Fluorescent Dye Others
    m-Cresol purple is a pH indicator dye with large cross section and halochromic property in neutral pH range .
    m-Cresol purple
  • HY-D0219A
    Thymol Blue sodium

    		Fluorescent Dye Others
    Thymol Blue sodium is an acid-base indicator used to indicate changes in pH. Thymol Blue sodium fades from red to yellow at pH 1.2 to 2.8 and from yellow to blue at pH 8.0 to 9.6 .
    Thymol Blue sodium
  • HY-D0140
    Chromoionophore I

    ETH 5294

    		 Fluorescent Dye Others
    Chromoionophore I (ETH 5294) is a hydrophobic pH indicator. Chromoionophore I is used as a transmissive or fluorescent probe molecule in many types of hydrophobic sensor membranes. Chromoionophore I is oil-soluble .
    Chromoionophore I
  • HY-118320
    Alizarine Yellow R

    Mordant orange 1

    		 Fluorescent Dye Others
    Alizarine Yellow R (Mordant orange 1), a salicylic acid derivative, is a azo dye. Alizarine Yellow R is mostly used as a pH indicator, as a biological stain in chemical examinations and also in dyeing industries .
    Alizarine Yellow R
  • HY-D1677
    5(6)-Carboxynaphthofluorescein

    		Fluorescent Dye Others
    5(6)-Carboxynaphthofluorescein is a pH-dependent fluorophore. 5(6)-Carboxynaphthofluorescein shows good sensitivity in an alkaline pH range and it can be exploited in the construction of fiber-optic pH sensors. 5(6)-Carboxynaphthofluorescein can be used as a fluorescent pH indicator (Ex/Em=593/668 nm) .
    5(6)-Carboxynaphthofluorescein
  • HY-D0169
    Phenol Red

    pHenolsulfonepHthalein

    		 Fluorescent Dye Others
    Phenol red (Phenolsulfonephthalein) is a pH indicator dye, relying on a distinct color change from pink to yellow in case of a positive reaction .
    Phenol Red
  • HY-D0142
    Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium

    		Fluorescent Dye Others
    Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium is a fluorescent dye and pH indicator, also as a ligand of multifunctional metal-organic framework. Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium has been used to detect CO2 release .
    Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium
  • HY-D1445
    LysoSensor PDMPO

    		Fluorescent Dye Metabolic Disease
    PDMPO, a lysosome pH indicator, is an excellent fluorescent acidotropic reagent for fluorescence imaging. PDMPO is a potent tool with which to study acidic organelles of live cells. PDMPO exhibits pH-dependent dual-excitation and dual-emission spectral peaks. PDMPO produces a blue fluorescence in weakly acidic organelles and shifts to yellow in more acidic lysosomes (Abs=329 nm; Em=440 nm) .
    LysoSensor PDMPO
  • HY-B1422
    9-Aminoacridine
    2 Publications Verification

    Aminacrine

    		 Bacterial HIV Infection
    9-Aminoacridine, a fluorescent probe, acts as an indicator of pH for quantitative determination of transmembrane pH gradients (inside acidic). 9-Aminoacridine is an antimicrobial. 9-Aminoacridine exerts its antimicrobial activity by interacting with specific bacterial DNA and disrupting the proton motive force in K. pneumoniae. 9-Aminoacridine is a HIV-1 inhibitor and inhibits HIV LTR transcription highly dependent on the presence and location of the amino moiety. 9-Aminoacridine inhibits virus replication in HIV-1 infected cell lines. 9-Aminoacridine is used as a Rifampin (RIF; HY-B0272) adjuvant for the multidrug-resistant K. pneumoniae infections .
    9-Aminoacridine
  • HY-D0012
    Bromothymol Blue

    		Fluorescent Dye Others
    Bromothymol Blue is a pH indicator.
    Bromothymol Blue
  • HY-W331502
    Chlorophenol Red sodium

    		Fluorescent Dye Others
    Chlorophenol Red sodium is a pH indicator .
    Chlorophenol Red sodium
  • HY-W025785
    Methyl yellow

    Solvent Yellow 2; Dimethyl yellow

    		 Others Others
    Methyl yellow (Solvent Yellow 2) is a pH indicator. Methyl yellow appears red at low pH, and becomes yellow above pH 4.0 .
    Methyl yellow
  • HY-D0166
    Neutral Red

    		Fluorescent Dye Others
    Neutral Red, a nitrogenous pH-indicator with a pKi of 6.8, is an indicator for the internal acidification of thylakoids. Neutral Red stains lysosomes red .
    Neutral Red
  • HY-D1401
    OG 488, acid

    		Fluorescent Dye Others
    OG 488, acid, a fluorescent pH indicator, has many applications in biochemistry and neurosciences .
    OG 488, acid
  • HY-101883
    BCECF-AM
    3 Publications Verification

    		 Fluorescent Dye Others
    BCECF-AM is a cell membrane permeable compound widely used as a fluorescent indicator for intracellular pH.
    BCECF-AM
  • HY-B1571
    Bromophenol blue

    Bromophenol blue is an acid phthalein dye, and it is used as a tracking dye for electrophoresis. Bromophenol blue is also used as a pH indicator, with a transition range of pH 3 to 4.6 .
    Bromophenol blue
  • HY-D0011
    Brom0phenol blue sodium

    		Biochemical Assay Reagents Others
    Bromophenol blue sodium is a pH indicator. It changes from yellow at pH 3.0 to blue at pH 4.6. Bromophenol blue sodium is also used as a tracking dye to monitor the process of agarose gel electrophoresis and polyacrylamide gel electrophoresis .
    Brom0phenol blue sodium
  • HY-133527
    OG 488, SE

    Oregon green 488 succinimidyl ester

    		 Fluorescent Dye Neurological Disease
    OG 488, SE (Oregon green 488 succinimidyl ester), a fluorescent pH indicator, has many applications in biochemistry and neurosciences .
    OG 488, SE
  • HY-W110798
    Bromophenol blue indicator (3.0-4.6)

    		Biochemical Assay Reagents Others
    Bromophenol blue indicator (3.0-4.6) is a synthetic dye commonly used as an acid-base indicator with a transition range of pH 3.0-4.6. Bromophenol blue indicator (3.0-4.6) is water soluble and changes color from yellow to blue as the pH of the solution changes from acidic to basic. Its unique chemical properties make it an important ingredient in a variety of scientific applications, especially in biochemistry and molecular biology. In addition, it can be used as a stain in microbiology and histology. However, Bromophenol blue indicator (3.0-4.6) has potential irritating and staining properties.
    Bromophenol blue <em>indicator</em> (3.0-4.6)
  • HY-D1477
    5(6)-Carboxyfluorescein diisobutyrate

    		Fluorescent Dye Others
    5(6)-Carboxyfluorescein diisobutyrate is a protected 5(6)-carboxyfluorescein. 5(6)-carboxyfluorescein is a fluorescence pH indicator .
    5(6)-Carboxyfluorescein diisobutyrate
  • HY-125457
    α-Naphtholbenzein

    p-NapHtolbenzein

    		 Fluorescent Dye Others
    α-Naphtholbenzein (p-Naphtolbenzein) is a dye. α-Naphtholbenzein can be used as a pH indicator. α-Naphtholbenzein has a visual transition from yellow (pH0-8.2) to turquoise (pH10). α-Naphtholbenzein is often used during sequential injection analysis technique done for acid-base titrations .
    α-Naphtholbenzein
  • HY-W087913
    alpha-Naphtholphthalein

    		Biochemical Assay Reagents Others
    alpha-Naphtholphthalein is an indicator that is light yellow at pH 6 and gradually shows a clear color change with increasing pH to light green-green-blue. alpha-Naphtholphthalein can be impregnated into cotton-blend fabrics and used to develop medical supplies for wound pH monitoring, such as medical gauze, hospital gowns and compression bandages .
    alpha-Naphtholphthalein
  • HY-W151206
    Hydroxy naphthol blue disodium

    		Fluorescent Dye Others
    Hydroxy naphthol blue disodium, an azo dye, is a metal indicator for calcium and a colorimetric reagent for alkaline earth metal ions ( λmax = 650 nm). In the pH range between 12 and 13, the solution of the indicator is reddish pink in the presence of calcium ion and to deep blue in the presence of disodium EDTA .
    Hydroxy naphthol blue disodium
  • HY-128369
    Acid Yellow 36

    Metanil Yellow

    		 Cytochrome P450 Others
    Acid Yellow 36 (Metanil Yellow) is an azo dye and a pH indicator. Acid Yellow 36 changes its color from red at pH 1.2 to yellow at pH 2.3. Acid Yellow 36 is used in the leather, paper and textile industries. Acid Yellow 36 acts as a bifunctional inducer of specific isozymes of P-450 and cytosolic enzymes .
    Acid Yellow 36
  • HY-D0112
    7-Hydroxycoumarin-4-acetic acid

    		Fluorescent Dye Others
    7-Hydroxycoumarin-4-acetic acid, a pH-indicator dye, is covalently bound to bovine serum albumin (BSA) at the positions of reactive amino groups (λmax=326 nm) .
    7-Hydroxycoumarin-4-acetic acid
  • HY-131510
    Chromoionophore XIII

    SNARF-DE

    		 Fluorescent Dye Others
    Chromoionophore XIII (SNARF-DE) is a pH senor that enables excitation with red light. Chromoionophore XIII functionality renders the indicator molecule lipophilic and water-insoluble but also prevents lactonization of the dye in an apolar environment .
    Chromoionophore XIII
  • HY-D0015A
    Cresol Red sodium

    		Fluorescent Dye Others
    Cresol Red sodium is a triarylmethane dye. Cresol Red sodium can be used for indicating pH, temperatures and salinities .
    Cresol Red sodium
  • HY-W040144
    Bromocresol green

    		Fluorescent Dye Others
    Bromocresol green is a pH-sensitive triphenylmethane dye commonly used for the determination of protein and albumin in serum. Bromocresol green is a bio-based dye with a yellow-green to blue-green color. Bromocresol green turns yellow (λmax=435 nm, protonated form) when placed in acidic solution (e.g. pH=4.15), and turns blue in basic solution (λmax=615 nm, deprotonated form). Bromocresol green is widely used as a pH indicator in the field of biochemical analysis. In addition, Bromocresol green is also used to detect the concentration of molecules such as creatinine, and to judge the viability of cells .
    Bromocresol green
  • HY-W411215
    1,4-Diacetoxy-2,3-dicyanobenzene

    		Fluorescent Dye Others
    1,4-Diacetoxy-2,3-dicyanobenzene is a cell-permeable fluorescent probe. 1,4-Diacetoxy-2,3-dicyanobenzene crosses the cell membrane and is cleaved by cytosolic esterases to the fluorescent pH indicator 2,3-dicyano-hydroquinone (DCH). 1,4-Diacetoxy-2,3-dicyanobenzene can be used to monitor intracellular pH .
    1,4-Diacetoxy-2,3-dicyanobenzene
  • HY-N8502
    Urdamycin A

    		Fluorescent Dye Cancer
    Urdamycin A (Compound 3b) is an angucycline antibiotic that can be isolated from Streptomyces fradiae. Urdamycin A is an orange indicator with a change of the color to ultramarine blue at pH 7.7. Urdamycin A has anticancer activity with IC50s of 2.4 and 0.55 μg/mL in proliferation and stem cell assays, respectively .
    Urdamycin A
  • HY-D0009
    Bromocresol green sodium

    		Fluorescent Dye Others
    Bromocresol green sodium is an anionic dye. Bromocresol green sodium can be used for pH indication and DNA agarose gel electrophoresis. Bromocresol green sodium is also used in mammalian albumin measurement. Bromocresol green sodium deprotonates and produces the monoanionic form of yellow colour at lower pH (acidic condition), and produces dianionic blue colour at the basic condition .
    Bromocresol green sodium
  • HY-B1422S
    9-Aminoacridine-13C6

    Aminacrine-13C6

    		 Bacterial HIV Isotope-Labeled Compounds Infection
    9-Aminoacridine-13C6 is the 13C-labeled 9-Aminoacridine(HY-B1422). 9-Aminoacridine, a fluorescent probe, acts as an indicator of pH for quantitative determination of transmembrane pH gradients (inside acidic). 9-Aminoacridine is an antimicrobial. 9-Aminoacridine exerts its antimicrobial activity by interacting with specific bacterial DNA and disrupting the proton motive force in K. pneumoniae. 9-Aminoacridine is a HIV-1 inhibitor and inhibits HIV LTR transcription highly dependent on the presence and location of the amino moiety. 9-Aminoacridine inhibits virus replication in HIV-1 infected cell lines. 9-Aminoacridine is used as a Rifampin (RIF; HY-B0272) adjuvant for the multidrug-resistant K. pneumoniae infections .
    9-Aminoacridine-13C6

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