(R)-Zopiclone CAS 138680-08-7
| CAS No. | 138680-08-7 |
| Molecular Formula | C17H17ClN6O3 |
| Molecular Weight | 388.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 (R)-Zopiclone.
(R)-Zopiclone (CAS 138680-08-7), molecular formula C17H17ClN6O3 and molecular weight 388.81 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, (R)-Zopiclone is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 388.81 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (R)-Zopiclone under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H17ClN6O3 |
| Molecular Weight | 388.81 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 6 |
Related R Standards
- Zopiclone Impurity 19 (CAS CATO-C4X-123819)
- 【禁售不询】Zopiclone (CAS 43200-80-2)
- Zopiclone Impurity 10 (CAS CATO-C4X-123810)
- Zopiclone Impurity 20 (CAS CATO-C4X-123820)
- Zopiclone-D4 (CAS 1435933-78-0)
- Zopiclone-d8 (CAS 1215518-83-4)
- Zopiclone EP Impurity A (CAS 43200-96-0)
- Zopiclone Impurity 13 (CAS CATO-C4X-123813)
Recommended Standards
- 2-((2-Chloro-6-fluorobenzyl)thio)-7-(4-fluorophenyl)-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 338417-71-3)
- Eszopiclone (S-Zopiclone) (CAS 138729-47-2)
- 2-(N-(5-Chloro-2-methylphenyl)methylsulfonamido)-N-(2,6-difluorophenyl)acetamide (CAS 708219-39-0)
- 3-((5-(5-Chloro-2-hydroxybenzylidene)-3-methyl-4-oxothiazolidin-2-ylidene)amino)benzoic acid (CAS 491582-40-2)
- 5-(Trifluoroacetyl)thiophene-2-carboxylic Acid (CAS 929028-43-3)
- 2,5-Dioxopyrrolidin-1-yl 4-methylbenzoate (CAS 83039-57-0)
- 3-(Aminomethyl)-3-(3-fluorophenyl)cyclobutan-1-ol (CAS 577038-60-9)
- 6-(3-(Pyridin-2-yl)-1,2,4-oxadiazol-5-yl)-4,5-dihydropyridazin-3(2H)-one (CAS 1710195-02-0)
- Methyl (S)-2-((tert-butyldimethylsilyl)oxy)-3-methylbutanoate (CAS 228716-82-3)
- N-(2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propionamide (CAS 2246619-90-7)
- 1-Bromo-3-(4-methylbenzenesulfonyl)propan-2-one (CAS 874009-26-4)
- Etomidate Impurity 45 (CAS CATO-C4X-188445)
- 4,7-Difluoro-1H-indole-2-carboxylic Acid (CAS 247564-67-6)
- Tirzepatide Impurity 13 (CAS CATO-C4X-324013)
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