Metoprolol Impurity 2 (Mixture of Z and E Isomers) CAS 82961-02-2
| CAS No. | 82961-02-2 |
| Molecular Formula | C15H23NO3 |
| Molecular Weight | 265.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Metoprolol Impurity 2 (Mixture of Z and E Isomers) 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.
As a process- or degradation-related impurity, Metoprolol Impurity 2 (Mixture of Z and E Isomers) (CAS 82961-02-2, C15H23NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Metoprolol Impurity 2 (Mixture of Z and E Isomers) is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 265.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C15H23NO3 |
| Molecular Weight | 265.35 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
Related Metoprolol Standards
Recommended Standards
- Methyl 5-(benzylsulfanyl)-1,3-thiazole-4-carboxylate (CAS 89502-06-7)
- Mirtazapine (CAS 61337-67-5)
- Methyl 4-methyl-3-phenyl-2-thioxo-2,3-dihydrothiazole-5-carboxylate (CAS 429623-36-9)
- N-((1-Cyclohexyl-1H-tetrazol-5-yl)methyl)pentanamide (CAS 921502-79-6)
- Pitavastatin Impurity 60 (CAS CATO-C4X-103760)
- Selexipag Impurity 21 (CAS CATO-C4X-196121)
- Nintedanib Impurity 90 (CAS CATO-C4X-181490)
- Rimegepant Impurity 147 (CAS CATO-C4X-2487147)
- Methyl 2,3,4-tri-O-benzyl-6-O-tert-butyldiphenylsilyl-a-D-glucopyranoside (CAS 58479-67-7)
- 1-(4-Bromophenyl)-α,α-dimethyl-1H-1,2,3-triazole-4-methanol (CAS 1000339-34-3)
- Benzoic acid, dihydroxy-, copper salt (CAS 52856-54-9)
- 9-Benzyl-3,9-diazaspiro[5.5]undecane-2,4-dione (CAS 189333-48-0)
- Ciclesonide (CAS 126544-47-6)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
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