Ethyl 4-bromo-6-methyl-7-oxo-1-tosyl-6,7-dihydro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate CAS 1445993-96-3
| CAS No. | 1445993-96-3 |
| Molecular Formula | C18H17BrN2O5S |
| Molecular Weight | 453.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 Ethyl 4-bromo-6-methyl-7-oxo-1-tosyl-6,7-dihydro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate.
Ethyl 4-bromo-6-methyl-7-oxo-1-tosyl-6,7-dihydro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate (CAS 1445993-96-3), molecular formula C18H17BrN2O5S and molecular weight 453.31 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H17BrN2O5S, Ethyl 4-bromo-6-methyl-7-oxo-1-tosyl-6,7-dihydro-1H-pyrrolo[2,3-c]pyridine-2-carboxylate contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 453.31 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C18H17BrN2O5S |
| Molecular Weight | 453.31 g/mol |
| 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 |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
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Recommended Standards
- Sofosbuvir Impurity 70 (CAS 1334513-02-8)
- (E)-[2-(Benzenesulfonyl)-2-(6-chloropyridin-3-yl)ethylidene][(2-chloro-4-fluorophenyl)methoxy]amine (CAS 478048-60-1)
- Sofosbuvir Impurity 59 (CAS 1627824-09-2)
- (E)-N-((2-(2-fluorophenyl)hydrazono)methyl)-2,5-bis(2,2,2-trifluoroethoxy)benzamide (CAS 400081-42-7)
- 3'-Fluoro-4'-(trifluoromethyl)-[1,1'-biphenyl]-4-sulfonamide (CAS 1141768-04-8)
- 2-(3-Amino-1h-1,2,4-triazol-1-yl)-N-butylacetamide (CAS 1184488-20-7)
- Varenicline (CAS 249296-44-4)
- Cyclopropyl(p-tolyl)methanol (CAS 6552-46-1)
- Tamsulosin Impurity 44 (CAS 119714-13-5)
- 6,7-Dihydro-5H-pyrrolo[1,2-c]imidazol-7-amine dihydrochloride (CAS 1864073-39-1)
- 1-(Methoxymethyl)-5-vinyl-1H-imidazole (CAS 160425-47-8)
- 5-(4-Chlorophenyl)-2-((4-chlorophenyl)thio)pyrimidine (CAS 860649-94-1)
- Methyl 5-Phenylthiophene-2-carboxylate (CAS 14597-62-7)
- Semaglutide impurity 256 (CAS CATO-C4X-2226256)
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