Eszopiclone Impurity 25 CAS 43200-88-0
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 43200-88-0 |
| Molecular Formula | C18H11ClN4O4 |
| Molecular Weight | 382.76 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Eszopiclone Impurity 25 (CAS 43200-88-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C18H11ClN4O4. Molecular weight: 382.76 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C18H11ClN4O4 |
| Molecular Weight | 382.76 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 |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| 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 (S-Zopiclone) (CAS 138729-47-2)
- Eszopiclone Impurity 21 (CAS CATO-C4X-123821)
- Eszopiclone impurity 26 (CAS 151776-26-0)
- Eszopiclone-d8 (CAS 1093385-24-0)
- Eszopiclone EP Impurity A (CAS 151851-70-6)
- Eszopiclone Impurity 7 (CAS 43200-83-5)
- Eszopiclone Impurity 6 (CAS 1122549-43-2)
- Eszopiclone Impurity 23 (CAS 43200-82-4)
Recommended Standards
- 5-(3-(2-Chlorophenyl)-5-methylisoxazol-4-yl)-3-(4-nitrophenyl)-1,2,4-oxadiazole (CAS 337932-16-8)
- 1,4-Diamino-6-chloro-2-(3-fluorophenoxy)anthracene-9,10-dione (CAS 88605-20-3)
- 4-Chloro-1-methyl-2-phenyl-5-{[3-(trifluoromethyl)phenoxy]methyl}-2,3-dihydro-1H-pyrazol-3-one (CAS 946387-08-2)
- Rebamipide Impurity 49 (CAS CATO-C4X-152349)
- Linezolid Impurity 9 (CAS 1219708-30-1)
- 5-Allyl-8-amino-3,3-dimethyl-2,3-dihydro-1,5-benzoxazepin-4(5H)-one (CAS 1170001-31-6)
- 5-Oxo-piperidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-ethyl ester (CAS 1417793-01-1)
- Isavuconazole Impurity 154 (CAS CATO-C4X-1236154)
- 2-(6-Hydroxy-4-pyrimidinyl)acetic acid (CAS 1119449-91-0)
- Des-Lys20(Side Chain)-Semaglutide (CAS CATO-C4X-2226280)
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