Ketorolac Impurity 57 CAS CATO-C4X-166957
| CAS No. | CATO-C4X-166957 |
| Molecular Formula | C15H15NO4 |
| Molecular Weight | 273.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Ketorolac Impurity 57 (CAS CATO-C4X-166957) is a certified pharmaceutical impurity reference standard with the molecular formula C15H15NO4 and a molecular weight of 273.28 g/mol.
Based on its molecular formula C15H15NO4, Ketorolac Impurity 57 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 273.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C15H15NO4 |
| Molecular Weight | 273.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Ketorolac Standards
- Ketorolac Impurity 58 (CAS CATO-C4X-166958)
- Ketorolac Impurity 22 (CAS CATO-C4X-166922)
- Ketorolac Impurity 26 (CAS 111930-01-9)
- Ketorolac Impurity 51 (CAS 111122-84-0)
- Ketorolac Impurity 52 (CAS 147088-89-9)
- Ketorolac EP Impurity H (CAS 80965-09-9)
- Ketorolac EP Impurity J (CAS 108061-03-6)
- Ketorolac Impurity 25 (CAS CATO-C4X-166925)
Recommended Standards
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- tert-Butyl 3-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzoate (CAS 680185-88-0)
- Carbocisteine Impurity 31 (CAS CATO-C4X-201031)
- Mirabegron Impurity 46 (CAS CATO-C4X-103246)
- Ibuprofen EP Impurity A (CAS 66622-47-7)
- 4-Methyl (4,6-dimethoxypyrimidin-2-yl)benzoate (CAS 633321-18-3)
- 2-(Cis-4-(tert-butyl)cyclohexyl)ethanol (CAS 66821-95-2)
- 2-(1,2,3,6-tetrahydropyridin-1-yl)ethan-1-amine dihydrochloride (CAS 300578-47-6)
- 2-(Piperidin-1-yl)thiazole-5-carbaldehyde (CAS 129865-52-7)
- 2,4,6-Tributoxy-1,3,5,2,4,6-trioxatriborinane (CAS 101-36-0)
- 2-(3-Acetyl-5-chlorophenyl)acetic acid (CAS 1393543-05-9)
- Palmitoyl Pentapeptide-4 (CAS 214047-00-4)
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