2,5-Dichloro-o-terphenyl CAS 61577-02-4
| CAS No. | 61577-02-4 |
| Molecular Formula | C18H12Cl2 |
| Molecular Weight | 299.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,5-Dichloro-o-terphenyl (CAS 61577-02-4), molecular formula C18H12Cl2 and molecular weight 299.19 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,5-Dichloro-o-terphenyl (C18H12Cl2) contains chlorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 299.19 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 2,5-Dichloro-o-terphenyl under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H12Cl2 |
| Molecular Weight | 299.19 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, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 2,4-Dichloro-p-terphenyl (CAS 61576-83-8)
- 2',5'-Dichloro-1,1':4',1''-terphenyl (CAS 930796-39-7)
- 2,5-Dichloro-m-terphenyl (CAS 215508-04-6)
- 2,5-Dichloro-p-terphenyl (CAS 61576-86-1)
- 4,4’’-Dichloro-1,1’:2’,1’’-terphenyl (CAS 21711-56-8)
- 6,7-Dichloro-2-cyclopentyl-5-methoxy-2,3-dihydro-1H-inden-1-one (CAS 54197-02-3)
- 4,6-Dichloro-5-(4-fluorophenyl)-2-isobutylpyrimidine (CAS 1511078-05-9)
- 1-(2,6-Dichloro-phenyl)-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (CAS 1033586-29-6)
Recommended Standards
- 3-bromo-1-methyl-6-methylsulfonyl-pyrazolo[3,4-d]pyrimidine (CAS 508220-98-2)
- 4-(4-Bromobenzo[d]thiazol-2-yl)morpholine (CAS 863000-90-2)
- 1-Nitro-4-((4,4,5,5,5-pentafluoropentyl)oxy)benzene (CAS 1980086-49-4)
- (2,4-Dinitrophenyl)aspartic acid (CAS 26289-22-5)
- 6-chloro-3-hydroxy-2-phenylquinazolin-4(3H)-one (CAS 100527-73-9)
- 2-Amino-1-(3,5-difluorophenyl)ethanone hydrochloride (CAS 1187931-06-1)
- 2-Chloro-N'-[6-chloro-4-(trifluoromethyl)pyridin-2-yl]benzohydrazide (CAS 1797764-46-5)
- 6-Chloro-N-((1-ethylpyrrolidin-2-yl)methyl)pyrimidin-4-amine (CAS 1249717-31-4)
- 3-Iodo-5-(methoxycarbonyl)benzoic acid (CAS 93116-99-5)
- (Z)-2,2-Dimethyl-5-((phenylsulfonyl)methylene)tetrahydrofuran (CAS 89664-43-7)
- 6-(Difluoromethyl)-7-fluoro-1H-indole-3-sulfonyl chloride (CAS 2404661-52-3)
- 1-(Benzo[d]oxazol-2-yl)pyrrolidin-3-ol (CAS 1344247-38-6)
- (3-Methoxy-2,2-dimethylcyclopropyl)methanamine (CAS 1708160-45-5)
- Insulin Degludec Impurity 19 (CAS CATO-C4X-215719)
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