Ibuprofen impurity 140 CAS CATO-C4X-1082140
| CAS No. | CATO-C4X-1082140 |
| Molecular Formula | C11H18Cl2O4 |
| Molecular Weight | 285.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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.
Ibuprofen impurity 140 (CAS CATO-C4X-1082140) is a certified pharmaceutical impurity reference standard with the molecular formula C11H18Cl2O4 and a molecular weight of 285.16 g/mol.
The molecular framework of Ibuprofen impurity 140 (C11H18Cl2O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C11H18Cl2O4 |
| Molecular Weight | 285.16 g/mol |
| 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 | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| Halogen Content | Cl-containing |
Related Ibuprofen Standards
- Ibuprofen impurity 120 (CAS 124635-85-4)
- Ibuprofen Impurity 110 (CAS CATO-C4X-1082110)
- Ibuprofen Impurity 97 (CAS CATO-C4X-108297)
- Ibuprofen impurity 123 (CAS CATO-C4X-1082123)
- Ibuprofen impurity 124 (CAS CATO-C4X-1082124)
- Ibuprofen Impurity 83 (CAS 64622-21-5)
- Ibuprofen Impurity 20 (CAS 10262-65-4)
- Ibuprofen Impurity 149 (CAS CATO-C4X-1082149)
Recommended Standards
- Pentane-1,5-diyl bis(3-chloropropanoate) (CAS 50343-50-5)
- 3,4-Dichloro-N-(2-cyanopropyl)-N-ethylbenzamide (CAS 1252413-62-9)
- Methyl 6-bromo-5-methylbenzo[b]thiophene-4-carboxylate (CAS 2168049-75-8)
- 1-(Ethylsulfonyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole (CAS 1256360-10-7)
- Clopidogrel Impurity 100 (CAS CATO-C4X-1029100)
- Entecavir Impurity 42 (CAS CATO-C4X-107742)
- Vinblastine impurity 7 (CAS CATO-C4X-19847)
- 2,6-Dibromo-4-methylnicotinonitrile (CAS 38824-75-8)
- 2H-Furo[4,3,2-de]quinoline (CAS 17368-05-7)
- 5-Chlorosulfonyl-isophthalic acid dimethyl ester (CAS 29710-58-5)
- 4-tert-Butylphenyl isothiocyanate 1-tert-butyl-4-isothiocyanatobenzene p-t-butylphenyl isothiocyanate 4-(tert-butyl)phenyl isothiocyanate 19241-24-8 (CAS 19241-24-8)
- N1-(2-(Methylthio)phenyl)-N2-((1-(thiophen-2-yl)cyclopentyl)methyl)oxalamide (CAS 1058475-56-1)
- 2-Bromo-3-methoxy-6-methylpyridine (CAS 24207-22-5)
- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
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