Baclofen impurity 73（E-Isomer） CAS CATO-C4X-101273
| CAS No. | CATO-C4X-101273 |
| Molecular Formula | C20H20Cl2N2O4 |
| Molecular Weight | 423.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Baclofen impurity 73（E-Isomer） (CAS CATO-C4X-101273), a pharmacopoeial impurity reference standard (molecular formula C20H20Cl2N2O4, MW 423.29 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Baclofen impurity 73（E-Isomer） is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 423.29 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.
CATO manufactures Baclofen impurity 73（E-Isomer） 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 | C20H20Cl2N2O4 |
| Molecular Weight | 423.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Baclofen Standards
- Baclofen Impurity 67 (CAS CATO-C4X-101267)
- Baclofen impurity 72 (CAS CATO-C4X-101272)
- Baclofen EP Impurity H (CAS CATO-C4X-101252)
- Baclofen Impurity 69 (CAS CATO-C4X-101269)
- Baclofen impurity 11 (CAS CATO-C4X-101211)
- Baclofen impurity 71（Z-Isomer） (CAS CATO-C4X-101271)
- Baclofen EP Impurity C (Mixture of Diastereomers) (CAS 2726264-10-2)
- Baclofen impurity 15 (CAS CATO-C4X-101215)
Recommended Standards
- Piperazine, 1,4-bis[(p-chlorophenoxy)acetyl]- (CAS 4190-83-4)
- Clevidipine butyrate Impurity 21 (CAS 175688-78-5)
- N,2-bis(4-chlorophenyl)-N-methyl-1-oxo-1,2-dihydroisoquinoline-4-carboxamide (CAS 439140-70-2)
- Carboplatin Impurity 9 (CAS CATO-C4X-20619)
- Norepinephrine Impurity 103 (CAS 102743-86-2)
- Travoprost Impurity 12 (CAS 39746-01-5)
- Paracetamol EP Impurity M HCl (CAS 1965310-24-0)
- Ethyl oxetane-3-carboxylate (CAS 1638771-18-2)
- 5-Bromo-2-hydroxy-3-methylpyridine (CAS 89488-30-2)
- 1-(2-Fluoro-4-(hexyloxy)phenyl)ethanone (CAS 203066-91-5)
- Fosetyl-aluminium D15. Short expiry date due to chemical nature of component(s) (CAS CATO-CCPD102183)
- 2-((1-Acetylpiperidin-4-yl)(ethyl)amino)acetic acid (CAS 1353944-16-7)
- 8-Acetyl-5-chloroquinoline (CAS 1438559-55-7)
- Eledoisin Related Peptide (CAS 2990-43-4)
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