Erlotinib Impurity 31 CAS CATO-C4X-106931
| CAS No. | CATO-C4X-106931 |
| Molecular Formula | C14H21NO6 |
| Molecular Weight | 299.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Erlotinib Impurity 31.
Erlotinib Impurity 31 (CAS CATO-C4X-106931) is a certified pharmaceutical impurity reference standard with the molecular formula C14H21NO6 and a molecular weight of 299.32 g/mol.
Structurally, Erlotinib Impurity 31 (C14H21NO6) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 299.32 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C14H21NO6 |
| Molecular Weight | 299.32 g/mol |
| Appearance | Off-white to pale 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Erlotinib Standards
- Erlotinib Impurity 109 (CAS 476168-17-9)
- Erlotinib Impurity 30 (CAS CATO-C4X-106930)
- Erlotinib Impurity 58 (CAS CATO-C4X-106958)
- Erlotinib Impurity 59 (CAS CATO-C4X-106959)
- Erlotinib Impurity 81 (CAS CATO-C4X-106981)
- Erlotinib Impurity 82 (CAS CATO-C4X-106982)
- Erlotinib Impurity 118 (CAS 183322-16-9)
- Erlotinib Impurity 32 (CAS 236750-65-5)
Recommended Standards
- Posaconazole Impurity 111 (CAS 112559-81-6)
- Donepezil Impurity 43 (CAS CATO-C4X-103943)
- Telmisartan Impurity 65 (CAS CATO-C4X-135965)
- N-(4-nitrophenethyl)-N-phenethylnitrous amide (CAS CATO-C3D-262166)
- Lacidipine Impurity 10 (CAS CATO-C4X-167110)
- Peramivir Impurity 43 (CAS 229614-51-1)
- Isotretinoin EP Impurity F (CAS 68070-35-9)
- 6-methyl-2-(3-nitrophenyl)pyrimidine 1-oxide (CAS 210036-45-6)
- 5-Fluoro-7-hydroxy-2H-chromene-3-carbaldehyde (CAS 1228581-47-2)
- 1-(Bromomethyl)-2-chloro-4-(trifluoromethoxy)benzene (CAS 1261642-94-7)
- 1-(4-Chlorobenzoyl)-N-methyl-4-nitro-1H-pyrazol-3-amine (CAS 318517-38-3)
- 4-(Chloromethyl)-1-(3-phenylpropyl)piperidine (CAS 1273681-73-4)
- 2-(4-Oxoazetidin-2-yl)acetic acid (CAS 77960-43-1)
- Semaglutide impurity 54 (CAS CATO-C4X-222654)
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