5-bromo-2-methyl-7-nitro-2,3-dihydro-1-benzofuran CAS 1334646-29-5
| CAS No. | 1334646-29-5 |
| Molecular Formula | C9H8BrNO3 |
| Molecular Weight | 258.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 258.07 g/mol gives 5-bromo-2-methyl-7-nitro-2,3-dihydro-1-benzofuran distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-bromo-2-methyl-7-nitro-2,3-dihydro-1-benzofuran (CAS 1334646-29-5), molecular formula C9H8BrNO3 and molecular weight 258.07 g/mol, is a CATO reference standard with documented purity and traceability.
5-bromo-2-methyl-7-nitro-2,3-dihydro-1-benzofuran (C9H8BrNO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-bromo-2-methyl-7-nitro-2,3-dihydro-1-benzofuran meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H8BrNO3 |
| Molecular Weight | 258.07 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 sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related bromo Standards
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Recommended Standards
- N-[6-(2-Bromo-acetyl)-pyridazin-3-yl]-acetamide (CAS 1313712-11-6)
- (2-Bromo-5H-pyrrolo[2,3-b]pyrazine-5,7-diyl)dimethanol (CAS 1334674-87-1)
- 1-(3,5-Dichlorophenyl)-3,3,3-trifluoropropan-1-amine (CAS 1270480-19-7)
- (6-Bromo-7-methoxyfuro[3,2-c]pyridin-2-yl)methanol (CAS 1346446-86-3)
- 10-(Tert-butyl)-7-oxa-15b-aza-11b-borabenzo[a]naphtho[3,2,1-fg]aceanthrylene (CAS 2484846-47-9)
- Ethyl 6-cyclopropyl-6-oxohexanoate (CAS 898776-30-2)
- 6-(2,3-dichlorophenoxy)pyridine-3-carboxylic acid (CAS 1019451-16-1)
- 1H-Thieno[3,4-d]imidazole-4-pentanoic acid, hexahydro-2-oxo-, 2-[(2,3,4,5,6-pentafluorophenyl)methylene]hydrazide, (3aR,4S,6aS)-rel- (CAS 1214982-06-5)
- N-Hexadecanoyl-Valine (CAS 45287-42-1)
- 1-(5-Bromo-2-methoxybenzyl)pyrrolidin-3-ol (CAS 1280708-09-9)
- 1-(1-Methylpiperidin-3-yl)ethan-1-one hydrochloride (CAS 91324-28-6)
- 2-(tert-Butyl)-4-cyclopropoxypyridine (CAS 1243322-73-7)
- N-(3,5-Difluorobenzyl)-1-(1-methyl-1H-pyrazol-5-yl)methanamine hydrochloride (CAS 1856046-22-4)
- Insulin Degludec Impurity 20 (CAS CATO-C4X-215720)
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