Eszopiclone Impurity 7 CAS 43200-83-5
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 43200-83-5 |
| Molecular Formula | C11H7ClN4O3 |
| Molecular Weight | 278.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Eszopiclone Impurity 7 (CAS 43200-83-5) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C11H7ClN4O3. Molecular weight: 278.65 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C11H7ClN4O3 |
| Molecular Weight | 278.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Eszopiclone Standards
- Eszopiclone Impurity 6 (CAS 1122549-43-2)
- Eszopiclone Impurity 23 (CAS 43200-82-4)
- Eszopiclone impurity 26 (CAS 151776-26-0)
- Eszopiclone Impurity 25 (CAS 43200-88-0)
- Eszopiclone (S-Zopiclone) (CAS 138729-47-2)
- Eszopiclone Impurity 21 (CAS CATO-C4X-123821)
- Eszopiclone-d8 (CAS 1093385-24-0)
- Eszopiclone Impurity 26 (CAS 7560-85-2)
Recommended Standards
- 5-Chlorouridine (CAS 2880-89-9)
- 1-(6-Amino-7-chloro-3,4-dihydroisoquinolin-2(1h)-yl)-2,2,2-trifluoroethanone (CAS 1097922-04-7)
- 5-(4-Chlorophenyl)pyrazine-2,3-dicarboxylic acid (CAS 80356-77-0)
- Levocetirizine Impurity 1 (Chlorobenzhydryl piperazine) (CAS 300543-56-0)
- Lornoxicam Impurity 7 (CAS 187746-94-7)
- (3-Chloro-4-methylphenyl)(3-methylpiperazin-1-yl)methanone hydrochloride (CAS 1831597-05-7)
- (5-(2-Aminopropan-2-yl)pyridin-3-yl)boronic acid (CAS 2225177-33-1)
- Rel-(4aR,7aR)-octahydropyrrolo[3,4-b][1,4]oxazine (CAS 138026-94-5)
- N-(3-Amino-4-methylphenyl)-4-fluorobenzamide (CAS 1016847-69-0)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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 13829788188 / jacky.chen@cato-chem.com