2. Fluorescent Dye
  3. Cell Staining Analysis
  4. Cell Function Analysiss
  5. PH Indicators

PH Indicators

PH Indicators (32):

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-D0023
    Pyranine 6358-69-6 ≥98.0%
    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-D0169
    Phenol Red 143-74-8 ≥98.0%
    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-D1094
    Carboxy-SNARF 1 (5/6-mixture) 126208-12-6
    Carboxy-SNARF 1 (5/6-mixture) (SNARF 1) is a fluorescent probe that is sensitive to pH. Carboxy-SNARF 1 (5/6-mixture) can be used for measurement pH.
    Carboxy-SNARF 1 (5/6-mixture)
  • HY-118155
    9-Amino-6-chloro-2-methoxyacridine 3548-09-2 99.56%
    9-Amino-6-chloro-2-methoxyacridine is a pH sensitive fluorescent probe. 9-Amino-6-chloro-2-methoxyacridine has been frequently used to measure changes in vacuolar pH when a specific substrate crosses the tonoplast through a putative H+/solute antiport system.
    9-Amino-6-chloro-2-methoxyacridine
  • HY-B1422
    9-Aminoacridine 90-45-9 99.50%
    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-D0234
    o-Cresolphthalein 596-27-0
    o-Cresolphthalein (ortho-Cresolphthalein) is a biocatalyst and a key enzyme in new biocatalyst technology. Enzyme engineering focuses on enhancing enzyme reaction kinetics, substrate selectivity, and activity under harsh conditions such as low or high pH. By introducing stimulus responsiveness to these enzyme modifications, dynamic control of activity is also possible.
    o-Cresolphthalein
  • HY-101882
    BCECF 85138-49-4
    BCECF is a pH-sensitive fluorescent dye. BCECF allows measurements in the physiological pH range 6.0–8.0. Excitation ratio: 490/440 nm; Emission intensity: 535 nm.
    BCECF
  • HY-101883
    BCECF-AM 117464-70-7 ≥99.0%
    BCECF-AM is a cell membrane permeable compound widely used as a fluorescent indicator for intracellular pH.
    BCECF-AM
  • HY-W040226
    Indigo carmine 860-22-0 ≥98.0%
    Indigo carmine is an efficient reagent for the determination of ozone by chemlluminescence (CL).
    Indigo carmine
  • HY-D1457
    DND-189 152584-38-8 99.78%
    DND-189, a low-pH fluorescent probe, is sensitive to neutral and low pH range. DND-189 can be used to measure the pH of acidic organelles.
    DND-189
  • HY-118907
    Methyl Orange 547-58-0 98.36%
    Methyl Orange is a soluble azo dye commonly used as an acid-base indicator and for staining cells and tissue sections, as well as for dyeing textiles. Methyl Orange appears red at a pH of 3.1 and changes to bright yellow as the pH increases to 4.4. Methyl Orange (500 mg/L) exhibits cytotoxicity and can cause DNA damage.
    Methyl Orange
  • HY-D0075
    DHPDS disodium salt 61255-63-8
    DHPDS disodium salt is a pH-sensitive fluorescent dye. DHPDS disodium salt is used to measure intracellular pH (pHi) from the surface fluorescence of the isolated perfused rat liver.
    DHPDS disodium salt
  • HY-D0219A
    Thymol Blue sodium 62625-21-2
    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-128369
    Acid Yellow 36 587-98-4
    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-D0219
    Thymol blue 76-61-9
    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. Storage: protect from light.
    Thymol blue
  • HY-D0140
    Chromoionophore I 125829-24-5
    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-D1687
    Flubi-2
    Flubi-2 is a fluorescein-biotin based pH-ratio dye (Ex=480 nm, Em= 520-560 nm) with a pK value of 6.7. Flubi-2 is a hydrolysis product of Flubida-2 (non-fluorescent, membrane permeable). Flubi-2 can be used for pH determination of organelles of the secretory pathway (such as golgi apparatus and endoplasmic reticulum) in living cells.
    Flubi-2
  • HY-D1688
    Flubida-2
    Flubida-2 is a cell permeable dye which can be hydrolyzed to Fubi-2 by endoesterases in cells (after hydrolysis, Ex=492 nm, Em=517 nm). Flubida-2 can be used to detect pH at a specific site in a cell organelle by directing the probe to where avidin fusion proteins are located.
    Flubida-2
  • HY-W411215
    1,4-Diacetoxy-2,3-dicyanobenzene 83619-73-2
    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-118320
    Alizarine Yellow R 2243-76-7 ≥98.0%
    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