Labetalol Impurity 82 CAS CATO-C4X-246682
| CAS No. | CATO-C4X-246682 |
| Molecular Formula | C20H26N2O3 |
| Molecular Weight | 342.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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 Labetalol Impurity 82.
CATO supplies Labetalol Impurity 82 (CAS CATO-C4X-246682), a pharmacopoeial impurity reference standard (molecular formula C20H26N2O3, MW 342.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H26N2O3, Labetalol Impurity 82 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 342.43 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H26N2O3 |
| Molecular Weight | 342.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Labetalol Standards
- Labetalol Impurity 53 (CAS 802620-01-5)
- Labetalol Impurity 52 (CAS CATO-C4X-246652)
- Labetalol Impurity 45 (CAS CATO-C4X-246645)
- Labetalol Impurity 41 (CAS CATO-C4X-246641)
- Labetalol Impurity 42 (CAS CATO-C4X-246642)
- Labetalol impurity 43 (CAS CATO-C4X-246643)
- Labetalol EP Impurity A (CAS 1391051-99-2)
- Labetalol Impurity 18 (CAS CATO-C4X-246618)
Recommended Standards
- Relebactam Impurity 20 (CAS CATO-C4X-214420)
- Truxene (CAS 548-35-6)
- Ketotifen Impurity 16 (CAS CATO-C4X-204616)
- CAS 67727-97-3 (CAS 67727-97-3)
- Janagliflozin impurity 5 (CAS CATO-C4X-30325)
- Nicardipine Impurity 13 (CAS CATO-C4X-171013)
- Thiamine /Vitamin B1 Impurity 56 (CAS 1153-39-5)
- 5-Bromo-4-cyclopropoxy-2-methoxypyridine (CAS 1243384-43-1)
- Methyl 2-chloro-6-ethoxynicotinate (CAS 888740-55-4)
- 3-(Bromomethyl)-4-methylthiophene (CAS 856937-70-7)
- 85017-82-9 Lithium bromide hydrate, Puratronic? MFCD00149763 (CAS 85017-82-9)
- (3-Methylsulfanyl-phenyl)-phenyl-amine (CAS 151386-72-0)
- N-(3-Amino-2-methylphenyl)-2-(2-chlorophenoxy)-propanamide (CAS 1020056-24-9)
- Peptide Impurity (CAS CATO-CPTD788810)
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