Oxcarbazepine Impurity 35 CAS 98253-74-8
| CAS No. | 98253-74-8 |
| Molecular Formula | C16H16N2O2 |
| Molecular Weight | 268.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Oxcarbazepine Impurity 35 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Oxcarbazepine Impurity 35 (CAS 98253-74-8), a pharmacopoeial impurity reference standard (molecular formula C16H16N2O2, MW 268.31 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Oxcarbazepine Impurity 35 (C16H16N2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C16H16N2O2 |
| Molecular Weight | 268.31 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 2 |
Related Oxcarbazepine Standards
- Oxcarbazepine Impurity 25 (CAS 104839-39-6)
- Oxcarbazepine EP Impurity B (CAS 28721-09-7)
- Oxcarbazepine EP Impurity I (CAS 537693-29-1)
- Oxcarbazepine Impurity 5 (CAS 153261-62-2)
- Oxcarbazepine Impurity 26 (CAS 33948-19-5)
- Oxcarbazepine EP Impurity K (CAS 1346601-76-0)
- Oxcarbazepine-d4 (CAS 1134188-71-8)
- Oxcarbazepine-d4 (CAS 1020719-71-4)
Recommended Standards
- Vildagliptin Impurity 68 (CAS CATO-C4X-110068)
- Salbutamol impurity 166 (CAS 2919946-71-5)
- Vildagliptin Impurity 41 (CAS 1616662-84-0)
- Bisoprolol Impurity 64 (CAS CATO-C4X-124764)
- Lornoxicam impurity 86 (CAS CATO-C4X-201686)
- Olanzapine Impurity 6 (CAS 161696-76-0)
- Carvedilol EP Impurity B (CAS 918903-20-5)
- 6-Chloroquinoline-2-sulfonyl chloride (CAS 1219101-08-2)
- 4-Phenyl-3-{1-[(2Z)-3-phenylprop-2-enoyl]piperidin-4-yl}-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1776051-32-1)
- 3-(Prop-2-yn-1-yl)piperidine-3-carboxylic acid (CAS 1520596-30-8)
- Anileridine Hydrochloride - API (CAS 53421-22-0)
- 7-Chloro-1-(2-fluorobenzyl)-1H-benzo[c][1,2]thiazin-4(3H)-one 2,2-dioxide (CAS 946236-54-0)
- 6-Fluoro-5-methylquinolin-8-ol (CAS 1420800-08-3)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
Why CATO?
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