Ibrutinib Impurity 79 CAS 21218-94-0
| CAS No. | 21218-94-0 |
| Molecular Formula | C14H12O3 |
| Molecular Weight | 228.24 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.
Ibrutinib Impurity 79 (CAS 21218-94-0) is a certified pharmaceutical impurity reference standard with the molecular formula C14H12O3 and a molecular weight of 228.24 g/mol.
Ibrutinib Impurity 79 (C14H12O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C14H12O3 |
| Molecular Weight | 228.24 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
Related Ibrutinib Standards
- Ibrutinib Impurity 81 (CAS 143667-36-1)
- Ibrutinib Impurity 193 (CAS 60034-89-1)
- Ibrutinib Impurity 181 (CAS 79888-54-3)
- Ibrutinib Impurity 51 (CAS CATO-C4X-106451)
- Ibrutinib Impurity 6 (CAS 143900-44-1)
- Ibrutinib Impurity 80 (CAS 109384-19-2)
- Ibrutinib Impurity N9 (CAS 86953-81-3)
- Ibrutinib Impurity N34 (CAS 98977-36-7)
Recommended Standards
- (BIPHENYL-4-YLOXY)-ACETIC ACID (CAS 13333-86-3)
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- Sitagliptin Impurity 127 (CAS CATO-C4X-1144127)
- Drotaverin Impurity 42 (CAS CATO-C4X-243542)
- Sulbenicillin Impurity 1 (CAS CATO-C4X-23241)
- Arotinolol Impurity 49 (CAS CATO-C4X-185449)
- 1-(3,5-Dichlorophenyl)cyclopropanecarbonitrile (CAS 124387-65-1)
- (1S,3R)-3-methoxycyclohexan-1-ol (CAS 1821819-34-4)
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- 3-(3,4-Difluorophenyl)-N-(4h-1,2,4-triazol-3-yl)propanamide (CAS 1211189-74-0)
- Ethyl 2-(2-(morpholinomethyl)benzoyl)benzoate (CAS 898750-14-6)
- 8-Bromo-3,7-dihydro-3-methyl-7-(1-methylethyl)-1H-purine-2,6-dione (CAS 123980-53-0)
- Biotinyl-Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 1816258-36-2)
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