Cas no 4430-20-0 (Chlorophenol Red)

Chlorophenol Red is a pH indicator dye commonly used in analytical chemistry and biological research. It exhibits a distinct color transition from yellow to red-violet over a pH range of 4.8 to 6.7, making it particularly useful for monitoring pH changes in weakly acidic to neutral solutions. The compound is valued for its high sensitivity, stability, and reproducibility in spectrophotometric and titrimetric applications. Its water solubility and low toxicity also facilitate its use in microbiological and cell culture media. Chlorophenol Red is often employed in enzyme assays, buffer standardization, and as a visual indicator in diagnostic kits, providing reliable and precise pH measurements.
Chlorophenol Red structure
Chlorophenol Red structure
Product Name:Chlorophenol Red
CAS No:4430-20-0
MF:C19H12Cl2O5S
MW:423.266582489014
MDL:MFCD00005877
CID:45042
PubChem ID:24851922
Update Time:2025-06-07

Chlorophenol Red Chemical and Physical Properties

Names and Identifiers

    • 3,3-Bis(3-chloro-4-hydroxyphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
    • 3,3-Dichlorophenylsulfonphthalein
    • CPR
    • dichlorophenolsulphonephthalein
    • alpha-(3-chloro-4-hydroxyphenyl)-alpha-(3-chloro-4-oxocyclohexa-2,5-dienylidene)toluene-2-sulphonicacid
    • Chlorophenol red (0.04 in water)
    • Chlorophenol red
    • 2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1λ<sup>6</sup>-benzoxathiol-3-yl]phenol
    • ChlorophenolRed,indicatorgrade,pure10GR
    • ChlorophenolRed,indicatorgrade,pure50GR
    • 3',3'-Dichlorophenolsulfonaphthalein
    • Chlorophenol Red, indicator grade, pure
    • Chlorophenol Red, pure, indicator grade
    • 3′,3′-Dichlorophenolsulfonaphthalein
    • 3',3"-Dichlorophenylsulfonphthalein
    • 3',3''-Dichlorophenylsulfonphthalein
    • Dichlorophenolsulfonephthalein
    • 2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol
    • C-5243
    • 3,3-Bis(3-chloro-4-hydroxyphenyl)3H-2,1-benzoxathiole S,S-dioxide
    • 3,3-bis(3-chloro-4-hydroxyphenyl)-3H-2,1??-benzoxathiole-1,1-dione
    • 4,4-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-chlorophenol]
    • 3,3-bis(3-chloro-4-hydroxyphenyl)-3H-2,1$l^{6}-benzoxathiole-1,1-dione
    • NSC-7828
    • Chlorophenol red indicator
    • Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-chloro-, S,S-dioxide
    • MFCD00005877
    • FT-0623688
    • 4430-20-0
    • Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro-
    • Phenol,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-chloro-, S,S-dioxide
    • 2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6-benzoxathiol-3-yl]phenol
    • AS-72514
    • EINECS 224-619-2
    • Chlorphenolsulfonphthalein
    • Chlorophenol Red, indicator grade
    • NS00022193
    • WWAABJGNHFGXSJ-UHFFFAOYSA-N
    • 3',3''-Dichlorophenolsulfonphthalein
    • UNII-P3S5KH33EA
    • C-5245
    • A826532
    • AC-252
    • Q410281
    • DTXSID4063450
    • P3S5KH33EA
    • ChlorophenolRed
    • 3,3-bis(3-chloro-4-hydroxyphenyl)-3H-2,1lambda6-benzoxathiole-1,1-dione
    • 4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-chlorophenol]
    • 2-Chloro-4-[3-(3-chloro-4-hydroxy-phenyl)-1,1-dioxo-benzo[c]oxathiol-3-yl]phenol
    • 2-chloro-4-[3-(3-chloro-4-hydroxy-phenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenol
    • NSC7828
    • 3,3-Bis(3-chloro-4-hydroxyphenyl)-3H-benzo[c][1,2]oxathiole1,1-dioxide
    • 3,3'-Dichlorophenolsulfonephthalein
    • 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-chlorophenol) S,S-dioxide
    • NSC 7828
    • J-610024
    • SCHEMBL56518
    • 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2-chlorophenol], 9CI
    • AKOS015896065
    • AMY22418
    • Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro-, S,S-dioxide
    • 3,3-bis(3-chloro-4-hydroxyphenyl)benzo[c]1,2-oxathiolene-1,1-dione
    • Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-chloro-
    • Chlorphenol Red
    • 3',3''-Dichlorophenol- sulfonphthalein
    • 3,3-bis(3-chloro-4-hydroxyphenyl)-3H-2,1$l^(6)-benzoxathiole-1,1-dione
    • 3',3''Dichlorophenolsulfonphthalein
    • Phenol, 4,4'(3H2,1benzoxathiol3ylidene)bis(2chloro, S,Sdioxide (8CI)
    • Phenol, 4,4'(1,1dioxido3H2,1benzoxathiol3ylidene)bis(2chloro
    • 2-Chloro-4-(3-(3-chloro-4-hydroxy-phenyl)-1,1-dioxo-benzo(c)oxathiol-3-yl)phenol
    • Phenol, 4,4'(3H2,1benzoxathiol3ylidene)bis(2chloro, S,Sdioxide (8CI)(9CI)
    • DTXCID3040302
    • CS-0009909
    • 4,4'(3H2,1Benzoxathiol3ylidene)bis(2chlorophenol) S,Sdioxide
    • 4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-chlorophenol)
    • 3',3''-Dichlorophenylsulfonphthalein; CPR
    • Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro-, S,S-dioxide (8CI)
    • HY-D0013
    • Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro-, S,S-dioxide (8CI)(9CI)
    • Chlorophenol Red
    • MDL: MFCD00005877
    • Inchi: 1S/C19H12Cl2O5S/c20-14-9-11(5-7-16(14)22)19(12-6-8-17(23)15(21)10-12)13-3-1-2-4-18(13)27(24,25)26-19/h1-10,22-23H
    • InChI Key: WWAABJGNHFGXSJ-UHFFFAOYSA-N
    • SMILES: ClC1=C(C=CC(=C1)C1(C2C=CC(=C(C=2)Cl)O)C2C=CC=CC=2S(=O)(=O)O1)O
    • BRN: 354053

Computed Properties

  • Exact Mass: 421.97800
  • Monoisotopic Mass: 421.97825
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 2
  • Hydrogen Bond Acceptor Count: 5
  • Heavy Atom Count: 27
  • Rotatable Bond Count: 2
  • Complexity: 625
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Surface Charge: 0
  • Tautomer Count: 5
  • XLogP3: nothing
  • Topological Polar Surface Area: 92.2

Experimental Properties

  • Color/Form: Yellowish brown powder
  • Density: 1.4641 (estimate)
  • Melting Point: 261 oC
  • Boiling Point: 480.2°C at 760 mmHg
  • Flash Point: 306.4°C
  • Solubility: Solubility Sparingly soluble in water; soluble in ethanol
  • Water Partition Coefficient: Insoluble
  • PSA: 92.21000
  • LogP: 5.49620
  • Sensitiveness: Sensitive to humidity
  • pka: 6.0(at 25℃)
  • λmax: 572nm
  • PH: 4.8(yellow)-6.8(red)
  • Solubility: Soluble in ethanol and dilute lye, slightly soluble in water, insoluble in ether and benzene

Chlorophenol Red Security Information

  • Symbol: GHS07
  • Prompt:warning
  • Signal Word:Warning
  • Hazard Statement: H315,H319,H335
  • Warning Statement: P261,P305+P351+P338
  • Hazardous Material transportation number:NONH for all modes of transport
  • WGK Germany:3
  • Hazard Category Code: 36/37/38
  • Safety Instruction: S26-S37/39
  • Hazardous Material Identification: Xi
  • TSCA:Yes
  • Storage Condition:Sealed in dry,2-8°C
  • Risk Phrases:R36/37/38
  • Packing Group:III
  • Safety Term:S26;S37/39
  • Packing Group:III

Chlorophenol Red Customs Data

  • HS CODE:29349990
  • Customs Data:

    China Customs Code:

    2934991000

    Overview:

    2934991000. Sulfolactone and sulfolactam. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:30.0%

    Declaration elements:

    Product Name, component content, use to

    Summary:

    2934991000. sultones and sultams. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Chlorophenol Red Pricemore >>

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Chlorophenol Red Suppliers

Suzhou Senfeida Chemical Co., Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:4430-20-0)Chlorophenol Red
Order Number:sfd7560
Stock Status:in Stock
Quantity:200kg
Purity:99.9%
Pricing Information Last Updated:Friday, 19 July 2024 14:34
Price ($):discuss personally
Shenzhen GeneSeqTools Bioscience & Technology Co. Ltd.
Gold Member
Audited Supplier Audited Supplier
(CAS:4430-20-0)Chlorophenol Red
Order Number:G12080002
Stock Status:in Stock
Quantity:1g;5g;25g;
Purity:98%
Pricing Information Last Updated:Tuesday, 12 August 2025 16:33
Price ($):inquiry

Chlorophenol Red Related Literature

Additional information on Chlorophenol Red

Chlorophenol Red: Chemical Profile and Recent Applications in Biomedical Research

Chlorophenol Red, a compound with the chemical formula C?H?Cl?O? and a CAS number of 4430-20-0, is a widely recognized chemical entity in the field of biomedical research. This compound, characterized by its red coloration when dissolved in aqueous solutions, has garnered significant attention due to its versatile applications in analytical chemistry, molecular biology, and pharmacological studies. The unique structural and functional properties of Chlorophenol Red make it an invaluable tool for researchers exploring various biochemical pathways and therapeutic interventions.

The molecular structure of Chlorophenol Red consists of a phenol ring substituted with two chlorine atoms and a carboxylic acid group. This configuration imparts distinct chemical reactivity, enabling the compound to participate in a wide range of biochemical interactions. The presence of the hydroxyl group and the electron-withdrawing chlorine atoms enhances its solubility in polar solvents, making it an excellent candidate for use in solution-based assays and experiments.

In recent years, Chlorophenol Red has been extensively utilized as a pH indicator in various biomedical applications. Its color transition range, typically from yellow to red, spans pH levels from 6.8 to 8.2, making it particularly useful for monitoring acid-base equilibrium in cellular environments. This property has been leveraged in studies investigating the effects of environmental stressors on cellular pH, as well as in the development of novel drug delivery systems that rely on pH-sensitive mechanisms.

Moreover, the compound has found application in the field of enzyme kinetics and protein binding studies. Researchers have employed Chlorophenol Red as a fluorescent probe to study the interaction between enzymes and their substrates. Its ability to emit fluorescence upon binding to specific biomolecules has made it a valuable tool for high-throughput screening assays aimed at identifying novel enzyme inhibitors. These inhibitors have potential therapeutic implications in treating various metabolic disorders and infectious diseases.

Recent advancements in biomedical research have highlighted the role of Chlorophenol Red in cellular signaling pathways. Studies have demonstrated its ability to modulate intracellular signaling cascades by interacting with specific receptors and ion channels. This has opened up new avenues for investigating the molecular mechanisms underlying diseases such as cancer, neurodegenerative disorders, and autoimmune conditions. The compound's ability to influence cellular signaling without exhibiting significant toxicity makes it an attractive candidate for further exploration in drug discovery efforts.

The analytical chemistry community has also benefited from the use of Chlorophenol Red as an internal standard or reference compound. Its well-characterized spectroscopic properties allow for accurate quantification of other analytes in complex mixtures. This has been particularly useful in metabolomics studies, where researchers aim to identify and quantify small molecules involved in metabolic pathways. The precision and reliability offered by Chlorophenol Red have contributed to advancements in our understanding of metabolic diseases and their treatment strategies.

In conclusion, Chlorophenol Red (CAS no. 4430-20-0) is a multifaceted compound with significant applications across various domains of biomedical research. Its unique chemical properties make it an indispensable tool for studying pH dynamics, enzyme kinetics, protein interactions, and cellular signaling pathways. As research continues to evolve, the versatility of Chlorophenol Red is likely to be further exploited, leading to new insights into disease mechanisms and innovative therapeutic approaches.

Recommended suppliers
Suzhou Senfeida Chemical Co., Ltd
(CAS:4430-20-0)Chlorophenol Red
sfd7560
Purity:99.9%
Quantity:200kg
Price ($):Inquiry
Email
Shenzhen GeneSeqTools Bioscience & Technology Co. Ltd.
(CAS:4430-20-0)Chlorophenol Red
G12080002
Purity:98%
Quantity:1g;5g;25g;
Price ($):Inquiry
Email