methyl 4-bromo-2-methyl-6H-thieno[2,3-b]pyrrole-5-carboxylate CAS 2759356-06-2
| CAS No. | 2759356-06-2 |
| Molecular Formula | C9H14BrNO2S |
| Molecular Weight | 280.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
methyl 4-bromo-2-methyl-6H-thieno[2,3-b]pyrrole-5-carboxylate (CAS 2759356-06-2), molecular formula C9H14BrNO2S and molecular weight 280.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H14BrNO2S, methyl 4-bromo-2-methyl-6H-thieno[2,3-b]pyrrole-5-carboxylate contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 280.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C9H14BrNO2S |
| Molecular Weight | 280.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related methyl Standards
- 2-(6-bromo-8-fluoro-3-quinolyl)ethanol (CAS 2306277-14-3)
- ethyl 2-bromo-4H-thieno[3,2-b]pyrrole-5-carboxylate (CAS 238749-50-3)
- methyl 3-bromo-2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylate (CAS 478239-04-2)
- 3-Bromo-2-methyl-1-(2-methyl-1H-indol-3-yl)-propan-1-one (CAS 1134334-75-0)
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- 3-Amino-4-(3-fluorophenyl)-1-methylazetidin-2-one (CAS 1706813-77-5)
- H-p-Chloro-Phe-D-Cys-β-(3-pyridyl)-Ala-D-Trp-Lys-Val-Cys-p-chloro-Phe-NH2 trifluoroacetate salt (Disulfide bond) (CAS 209006-05-3)
- 1,2,3,4-cyclobutane tetracarboxylic dianhydride 1,2,3,4-cyclobutanetetracarboxylic acid dianhydride; 1,2,3,4-cyclobutanetetracarboxylic dianhydride; 1,2,3,4-cyclobutantetracarboxylic acid dianhydride; 4415-87-6 EBD217581 cyclobutane tetracarboxylic dianhydride; cyclobutane-1,2,3,4-tetracarboxylic dianhydride cyclobutane-1,2,3,4-tetracarboxylic dianhydride; cyclobutanetetracarboxylic dianhydride; (CAS 4415-87-6)
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- 2-Amino-5-([4-sulfophenyl]azo)benzenesulfonic acid monosodium salt 4-Amino-1,1 inverted exclamation marka-azobenzene-3,4 inverted exclamation marka-disulfonic acid monosodium salt 74543-21-8 Acid Yellow 9 monosodium salt (CAS 74543-21-8)
- n-(Piperidin-4-yl)-4-(trifluoromethyl)pyrimidin-2-amine (CAS 874647-06-0)
- Semaglutide impurity 77 (CAS CATO-C4X-222677)
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