Ethosuximide impurity 18 CAS CATO-C4X-262518
| CAS No. | CATO-C4X-262518 |
| Molecular Formula | C7H12N2O |
| Molecular Weight | 140.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ethosuximide impurity 18 (C7H12N2O) contains an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Ethosuximide impurity 18 (CAS CATO-C4X-262518) is a certified pharmaceutical impurity reference standard with the molecular formula C7H12N2O and a molecular weight of 140.18 g/mol.
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.
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 | C7H12N2O |
| Molecular Weight | 140.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 2 |
Related Ethosuximide Standards
- Ethosuximide impurity 13 (CAS CATO-C4X-262513)
- Ethosuximide impurity 14 (CAS CATO-C4X-262514)
- Ethosuximide impurity 15 (CAS 39121-82-9)
- Ethosuximide impurity 16 (CAS 2024884-97-5)
- Ethosuximide (CAS 77-67-8)
- Ethosuximide impurity 7 (CAS CATO-C4X-26257)
- Ethosuximide EP Impurity B (CAS 50598-33-9)
- Ethosuximide impurity 17 (CAS CATO-C4X-262517)
Recommended Standards
- Dimedone (CAS 126-81-8)
- 2-Acetylcyclohexanone (CAS 874-23-7)
- Sorbic acid impurity 5 (CAS 2396-84-1)
- 2-Phenoxyethanol-d2 (CAS 21273-38-1)
- Sumatriptan EP Impurity D (CAS 212069-94-8)
- Rivaroxaban Impurity N4 (CAS 1252018-21-5)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
- (2r)-2-Amino-2-(2-bromo-4-chlorophenyl)ethan-1-ol hydrochloride (CAS 2550996-62-6)
- 2-(Bromomethyl)benzo[d]oxazole-5-methanol (CAS 1806318-25-1)
- 2-Methyl-6-piperidin-3-yl-pyrimidin-4-ol dihydrochloride (CAS 1229625-11-9)
- tert-Butyl 4-cyano-4-(m-tolyl)piperidine-1-carboxylate (CAS 1823241-26-4)
- N1-(7-Chloroquinolin-4-yl)-N2-(2-((7-chloroquinolin-4-yl)amino)ethyl)-N2-methylethane-1,2-diamine trihydrochloride (CAS 1391426-24-6)
- Diphenyl-2-pyridylphosphine 37943-90-1 2-(DIPHENYLPHOSPHINO)PYRIDINE;2-DIPHENYLPHOSPHANYL-PYRIDINE;2-PYRIDYLDIPHENYLPHOSPHINE;DIPHENYL(2-PYRIDINYL)PHOSPHINE;DIPHENYL-2-PYRIDYLPHOSPHINE;DIPHENYL-PYRIDIN-2-YLPHOSPHINE;DPPPY GC10055 (CAS 37943-90-1)
- Des-Ala18-Tirzepatide (CAS CATO-CPTD788955)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com