R-Metaraminol Impurity 43 CAS 21477-91-8
| CAS No. | 21477-91-8 |
| Molecular Formula | C9H13NO |
| Molecular Weight | 151.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H13NO, R-Metaraminol Impurity 43 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 151.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies R-Metaraminol Impurity 43 (CAS 21477-91-8), a pharmacopoeial impurity reference standard (molecular formula C9H13NO, MW 151.21 g/mol) used for the identification and quantification of trace impurities in APIs.
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 manufactures R-Metaraminol Impurity 43 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 | C9H13NO |
| Molecular Weight | 151.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related R Standards
- Metaraminol Impurity 37 (CAS 55789-02-1)
- Metaraminol Impurity 15 (CAS 13103-80-5)
- Metaraminol Impurity 19 (CAS CATO-C4X-225219)
- Metaraminol Impurity N2 (CAS 693772-30-4)
- Metaraminol Impurity 27 (CAS 78523-29-2)
- Metaraminol Impurity 10 (CAS 639070-81-8)
- Metaraminol Impurity 18 (CAS CATO-C4X-225218)
- Metaraminol Impurity 40 (CAS 82499-20-5)
Recommended Standards
- Phenacetin Impurity 1 (CAS 3154-18-5)
- N-Methyltyramine (CAS 370-98-9)
- Neostigmine impurity 40 (CAS CATO-C4X-204240)
- N-(2-Hydroxyethyl)-N-methylaniline (CAS 93-90-3)
- Darolutamide Impurity 17 (CAS CATO-C4X-310617)
- N-Nitroso Nicergoline Impurity 24 (CAS CATO-C4X-208524)
- Piribedil Impurity 11 (CAS CATO-C4X-281311)
- tert-Butyl 2-(pyridin-3-yl)piperazine-1-carboxylate (CAS 886771-08-0)
- 5-(5-chloro-1-methyl-1H-pyrazol-4-yl)-3-[4-(trifluoromethyl)phenyl]-1,2,4-oxadiazole (CAS 648427-08-1)
- 1-Propyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 934586-51-3)
- 4-Bromo-9-phenyl-9H-carbazole (CAS 1097884-37-1)
- (4-Phenylpyrimidin-2-yl)boronic acid (CAS 1314221-48-1)
- (1-(Pyrimidin-2-yl)piperidin-3-yl)methanol (CAS 419557-05-4)
- Calcium-Like Peptide 3 (CAS 261969-05-5)
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