Metoprolol Impurity 35 CAS CATO-C4X-136735
| CAS No. | CATO-C4X-136735 |
| Molecular Formula | C19H29NO6 |
| Molecular Weight | 367.44 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 Metoprolol Impurity 35.
Metoprolol Impurity 35 (CAS CATO-C4X-136735) is a certified pharmaceutical impurity reference standard with the molecular formula C19H29NO6 and a molecular weight of 367.44 g/mol.
Based on its molecular formula C19H29NO6, Metoprolol Impurity 35 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 367.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H29NO6 |
| Molecular Weight | 367.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Metoprolol Standards
- Metoprolol Impurity 33 (CAS CATO-C4X-136733)
- Metoprolol Impurity 34 (CAS CATO-C4X-136734)
- Metoprolol Impurity 46 (CAS CATO-C4X-136746)
- Metoprolol Impurity 19 (CAS 230975-30-1)
- Metoprolol EP Impurity J (CAS 163685-37-8)
- Metoprolol Impurity 52 (CAS CATO-C4X-136752)
- Metoprolol Impurity 49 (CAS CATO-C4X-136749)
- Metoprolol Impurity 48 (CAS CATO-C4X-136748)
Recommended Standards
- Naltrexone impurity 47 (CAS CATO-C4X-147547)
- Naltrexone impurity 48 (CAS CATO-C4X-147548)
- Cilostazol USP Related Compound B (CAS 73963-62-9)
- Naloxone Hydrochloride EP Impurity B (CAS 1352085-46-1)
- Etoricoxib impurity 74 (CAS CATO-C4X-108074)
- Simvastatin EP Impurity E (CAS 75330-75-5)
- Thioctic acid impurity 59 (CAS 28598-81-4)
- Benzo[d][1,3]dioxole-5,6-diol (CAS 21505-20-4)
- 4-Bromoisothiazole-3-carboxylic Acid (CAS 4576-88-9)
- Solifenacin Succinate EP Impurity D (CAS 2216750-52-4)
- Methyl 6-hydroxy-4-methylpicolinate (CAS 846046-89-7)
- Benzyl (3S,4R)-4-amino-3-fluoropiperidine-1-carboxylate hydrochloride (CAS 2101206-40-8)
- 2-(Aminomethyl)-6-(difluoromethyl)-3-iodo-5-methylpyridine (CAS 1805092-54-9)
- Semaglutide impurity 43 (CAS CATO-C4X-222643)
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