3,3',5,5'-Tetrachloro-[1,1'-biphenyl]-4,4'-diol CAS 13049-13-3
| CAS No. | 13049-13-3 |
| Molecular Formula | C12H6Cl4O2 |
| Molecular Weight | 323.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
3,3',5,5'-Tetrachloro-[1,1'-biphenyl]-4,4'-diol (CAS 13049-13-3) is a high-purity analytical reference standard with the molecular formula C12H6Cl4O2 and a molecular weight of 323.99 g/mol.
Structurally, 3,3',5,5'-Tetrachloro-[1,1'-biphenyl]-4,4'-diol (C12H6Cl4O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 323.99 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H6Cl4O2 |
| Molecular Weight | 323.99 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Cl-containing |
Related Tetrachloro Standards
- 3,3',5,5'-Tetrachloro-[1,1'-biphenyl]-2,2'-diol (CAS 21951-40-6)
- 6-(2,3,5,6-Tetrachloro-4-methylphenyl)pyridazin-3(2H)-one (CAS 92681-12-4)
- 4,5,6,7-Tetrachloro-2-(Trifluoromethyl)-1H-Benzimidazole (CAS 2338-29-6)
- 2,3,4,5-Tetrachloro-6-phenoxyaniline (CAS 1956310-69-2)
- 2,3,4,5-Tetrachloro-6-(phenylamino)phenol (CAS 91353-74-1)
- 2,3,4,4-Tetrachloro-3-(dichloromethyl)butanoic Acid Methyl Ester (CAS 97055-35-1)
- 2,3,7,8-Tetrachloro-P-Dioxin (CAS 1746-01-6)
- 2,3,6,7-Tetrachloro-9H-xanthene (CAS 118516-13-5)
Recommended Standards
- 3-Iodo-6-pentafluoroethylpyridazine (CAS 1206523-99-0)
- 4,5-Dichloro-2-(2,6-dichlorobenzyl)pyridazin-3(2H)-one (CAS 175135-43-0)
- 4-Iodo-1,1,1,2-tetrafluoro-2-(trifluoromethyl)butane (CAS 99324-96-6)
- 2,3-Dibromobenzo[b]thiophene 1,1-dioxide (CAS 19163-38-3)
- 5-Bromo-1-(4-fluorophenyl)pyridin-2(1h)-one (CAS 1349798-33-9)
- (S)-5,6,7,8-tetrahydroisoquinolin-8-amine (CAS 1213172-32-7)
- 2-(3-Hydroxyphenyl)quinoline-4-carboxylic acid (CAS 32366-58-8)
- 2-((1S,2S,5S)-6,6-Dimethylbicyclo[3.1.1]heptan-2-yl)ethanol (CAS 133001-09-9)
- 2,3-Dihydro-1,4-benzodioxine-6-carbothioamide (CAS 337508-71-1)
- (1S,5R)-1-Phenyl-3-oxabicyclo[3.1.0]hexan-2-one (CAS 96847-53-9)
- 4-Methyl-2-[(4-methylphenyl)sulfanyl]-5H,6H,7H-cyclopenta[d]pyrimidine (CAS 343374-38-9)
- m-PEG2-O-Ph-3-NH2 (CAS 126415-02-9)
- Tert-butyl (3aR,6aR)-3a-methylhexahydropyrrolo[3,4-c]pyrrole-2(1H)-carboxylate (CAS 2090176-67-1)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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