4430-20-0 Chlorophenol red 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-chlorophenol) S,S-dioxide 3',3''-Dichlorophenolsulfonphthalein Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro-, S,S-dioxide (8CI)(9CI) Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro- Chlorphenol Red Chlorphenolsulfonphthalein Dichlorophenolsulfonephthalein EINECS 224-619-2 NSC 7828 CAS 4430-20-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4430-20-0 |
| Molecular Formula | C19H30Cl2O5S |
| Molecular Weight | 441.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order 4430-20-0 Chlorophenol red 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-chlorophenol) S,S-dioxide 3',3''-Dichlorophenolsulfonphthalein Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro-, S,S-dioxide (8CI)(9CI) Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro- Chlorphenol Red Chlorphenolsulfonphthalein Dichlorophenolsulfonephthalein EINECS 224-619-2 NSC 7828 (CAS 4430-20-0) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C19H30Cl2O5S. Molecular weight: 441.41 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C19H30Cl2O5S |
| Molecular Weight | 441.41 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorophenol Standards
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- 2-Chlorophenol Acetate (CAS 4525-75-1)
- 3-Chlorophenol Acetate (CAS 13031-39-5)
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Recommended Standards
- N-(2,6-Diisopropylphenyl)-1,1,1-trifluoro-N-((trifluoromethyl)sulfonyl)methanesulfonamide (CAS 1092576-41-4)
- Dexamethasone Impurity 83 (CAS 1879-87-4)
- Folic Acid (CAS 59-30-3)
- 2-(4-Acetyl-2-methoxyphenoxy)acetonitrile (CAS 1016853-34-1)
- 3-Amino-3-(dimethyl-1,3-thiazol-5-yl)propanoic acid (CAS 773118-92-6)
- 18-Aminooctadecanoic acid (CAS 17437-24-0)
- 6-Hydroxypyrimidine-4-carbaldehyde (CAS 98136-87-9)
- (1S,2R,4R)-7-Azabicyclo[2.2.1]heptan-2-amine (CAS 1500153-58-1)
- tert-butyl 2-(2,2,2-trifluoroacetyl)pyrrolidine-1-carboxylate (CAS 1283719-71-0)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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