4-Bromopyrrole-2-carbaldehyde CAS 931-33-9
| CAS No. | 931-33-9 |
| Molecular Formula | C5H4BrNO |
| Molecular Weight | 174.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Bromopyrrole-2-carbaldehyde (CAS 931-33-9) is a high-purity analytical reference standard with the molecular formula C5H4BrNO and a molecular weight of 174.00 g/mol.
Based on its molecular formula C5H4BrNO, 4-Bromopyrrole-2-carbaldehyde contains an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 174.00 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H4BrNO |
| Molecular Weight | 174.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromopyrrole Standards
Recommended Standards
- 4-Bromo-2-hydroxypyridine (CAS 36953-37-4)
- 5-Bromo-1H-pyrrole-2-carbaldehyde (CAS 931-34-0)
- 3-Bromopyridine N-Oxide (CAS 2402-97-3)
- 5-Bromo-1H-pyrrole-3-carbaldehyde (CAS 881676-32-0)
- 3-Benzyl-1,5,3-dioxazepane (CAS 1019208-03-7)
- 2-(6-Fluoropyridin-2-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-amine (CAS 1380332-09-1)
- 2-(Difluoromethyl)-5-iodo-4-hydroxypyridine (CAS 1806780-31-3)
- 2-Hydroxypyridine-N-oxide (CAS 13161-30-3)
- 3,3-Dimethyl-5-oxo-1-piperidinecarboxylic Acid 1,1-Dimethylethyl Ester (CAS 1000894-83-6)
- 6-Hydrazinylnaphthalene-1,3-disulfonic acid (CAS 132557-71-2)
- 5-Chloro-6-hydroxynaphthalene-2-carbonitrile (CAS 1202880-08-7)
- 2-Amino-3-(3-bromo-2-fluorophenyl)propanoic acid (CAS 1273600-97-7)
- N,N,N-Trimethyl-2-oxo-1-propanaminium Chloride (CAS 54541-46-7)
- Semaglutide Impurity 125 xTFA Salt (CAS CATO-C4X-2226125)
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