5'-Chloro-1,1':3',1''-terphenyl CAS 126866-34-0
| CAS No. | 126866-34-0 |
| Molecular Formula | C18H13Cl |
| Molecular Weight | 264.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5'-Chloro-1,1':3',1''-terphenyl (C18H13Cl) 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 264.75 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.
CATO supplies 5'-Chloro-1,1':3',1''-terphenyl (CAS 126866-34-0), a certified reference material (molecular formula C18H13Cl, MW 264.75 g/mol) for analytical method development and quality control.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C18H13Cl |
| Molecular Weight | 264.75 g/mol |
| 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.) | 1993 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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- 5-Chloro-n-(cyanomethyl)-n-ethylthiophene-2-sulfonamide (CAS 1267356-74-0)
- 4-chloro-1-cycloheptyl-6-methyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 1293231-92-1)
- 3-Chloro-1,1':4',1''-terphenyl (CAS 1762-86-3)
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Recommended Standards
- 2-[(4-chlorophenyl)methyl]bicyclo[2.2.1]heptane-2-carboxylic acid (CAS 1275293-28-1)
- 2-(4-Chlorophenyl)-2-(2,2-dimethylmorpholin-4-yl)acetonitrile (CAS 1258650-80-4)
- tert-Butyl (4-(2-chloroacetamido)butyl)carbamate, 97% (CAS 133264-58-1)
- 2-((1-(4-Chlorophenyl)ethyl)(methyl)amino)-N-(prop-2-yn-1-yl)acetamide (CAS 1181540-52-2)
- n-((5-Methylthiophen-2-yl)methyl)butan-2-amine (CAS 869942-31-4)
- Methyl (2S,4S)-4-(3-iodophenoxy)-2-pyrrolidinecarboxylate (CAS 1217772-82-1)
- 5,6-dihydrobenzo[c]acridine (CAS 16600-51-4)
- Tert-butyl 4-(((4-aminobenzyl)amino)methyl)piperidine-1-carboxylate (CAS 1189105-85-8)
- 4-(Trifluoromethoxy)phenylhydrazine Hydrochloride (CAS 133115-72-7)
- (S,E)-3-(1-methylpyrrolidin-2-yl)acrylic acid (CAS 2243041-67-8)
- (3,4-Dichlorophenyl)(3-methylpyridin-2-yl)methanone (CAS 1187164-59-5)
- Decitabine Impurity 6 (CAS CATO-C4X-11376)
- Methyl 2-(benzylamino)propanoate (CAS 159721-22-9)
- Semaglutide impurity 98 (CAS CATO-C4X-222698)
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