Ketorolac Impurity 78 CAS CATO-C4X-166978
| CAS No. | CATO-C4X-166978 |
| Molecular Formula | C18H19NO5 |
| Molecular Weight | 329.35 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.
Ketorolac Impurity 78 (CAS CATO-C4X-166978) is a certified pharmaceutical impurity reference standard with the molecular formula C18H19NO5 and a molecular weight of 329.35 g/mol.
Based on its molecular formula C18H19NO5, Ketorolac Impurity 78 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 329.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C18H19NO5 |
| Molecular Weight | 329.35 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Ketorolac Standards
- Ketorolac Impurity 42 (CAS 144710-35-0)
- Ketorolac Impurity 79 (CAS CATO-C4X-166979)
- Ketorolac 2-Benzoylpyrrole Iodo Impurity (CAS 141031-77-8)
- Ketorolac Impurity 29 (CAS CATO-C4X-166929)
- Ketorolac impurity 67 (CAS CATO-C4X-166967)
- Ketorolac Impurity 76 (CAS CATO-C4X-166976)
- Ketorolac impurity 70 (CAS CATO-C4X-166970)
- Ketorolac Impurity 37 (CAS CATO-C4X-166937)
Recommended Standards
- Pranoprofen Impurity 72 (CAS CATO-C4X-181172)
- Indacaterol impurity 73 (CAS CATO-C4X-150073)
- Pranoprofen Impurity 73 (CAS CATO-C4X-181173)
- Naltrexone impurity 34 (CAS CATO-C4X-147534)
- Progesterone Impurity 54 (CAS CATO-C4X-150254)
- Acotiamide Impurity 21 (CAS 118452-04-3)
- Methylprednisolone Impurity 73 (CAS CATO-C4X-191973)
- N-{3-[1-(2-chloro-N-methylacetamido)ethyl]phenyl}benzamide (CAS 1269151-97-4)
- Methyl 2-bromo-5-(thiazol-2-yl)benzoate (CAS 1823792-22-8)
- 22-Hydroxy Cholesterol(Mixture of Diastereomers) (CAS 17711-16-9)
- 5-Bromo-2-[4-(tert-pentyl)phenoxy]phenylamine (CAS 946786-86-3)
- 3-Nitro-4-hydroxyquinoline (CAS 50332-66-6)
- 4-Methyl-n-propylbenzene-1-sulfonamide (CAS 1133-12-6)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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