5-(4-Chloro-phenoxy)-pentanoic acid CAS 7170-55-0
| CAS No. | 7170-55-0 |
| Molecular Formula | C11H13ClO3 |
| Molecular Weight | 228.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-(4-Chloro-phenoxy)-pentanoic acid (CAS 7170-55-0), molecular formula C11H13ClO3 and molecular weight 228.67 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-(4-Chloro-phenoxy)-pentanoic acid (C11H13ClO3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C11H13ClO3 |
| Molecular Weight | 228.67 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 5-Chloro-3-[(3-fluorophenyl)methyl]-1,2,4-thiadiazole (CAS 1029718-68-0)
- 5-Chloro-3-[(2-fluorophenyl)methyl]-1,2,4-thiadiazole (CAS 1029718-69-1)
- n-(3-Chloro-4-fluorophenyl)-1,3-thiazol-2-amine (CAS 1039314-85-6)
- Ethyl 2-(5-chloro-2-methoxyphenyl)acetate (CAS 1050481-78-1)
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- 3-Chloro-4,5-diethoxybenzaldehyde (CAS 110732-06-4)
- 2-(5-Chloro-2-methoxyphenyl)-2-methylpropanoic acid (CAS 1183997-58-1)
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Recommended Standards
- 5-(3-Chlorophenoxy)pentanoic acid (CAS 7170-52-7)
- 5-Chloro-2-isopropoxy-3-methoxybenzaldehyde (CAS 827593-20-4)
- 5-(2-Chlorophenoxy)pentanoic acid (CAS 7170-47-0)
- 5-Chloro-3-[(4-fluorophenyl)methyl]-1,2,4-thiadiazole (CAS 946418-98-0)
- Carumonam disodium salt (CAS 86832-68-0)
- Methyl(2-methyl-1,3-dioxoisoindolin-4-yl)carbamic chloride (CAS 71173-81-4)
- Bupropion Impurity 4 (CAS 1246812-57-6)
- 4-[[(4-Phenyl-1-piperazinyl)imino]methyl]-1,3-benzenediol (CAS 306953-58-2)
- N-Boc-O-benzyl-DL-serine (CAS 53317-22-9)
- 1-Butyl-3-(3-methoxyphenyl)urea (CAS 195133-27-8)
- N-Me-DL-Phg-OH (CAS 74641-60-4)
- 1-Chloro-5-(methylsulfonyl)pentane (CAS 128147-29-5)
- 2-(3,3-Difluorocyclohexyl)-4-phenylpyridine (CAS 1241505-00-9)
- Cholecystokinin Octapeptide (1-5) (desulfated) (CAS 121880-96-4)
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