4-Bromo-2-methyloxazole CAS 1240613-43-7
| CAS No. | 1240613-43-7 |
| Molecular Formula | C4H4BrNO |
| Molecular Weight | 161.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-2-methyloxazole (C4H4BrNO) contains an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 4-Bromo-2-methyloxazole (CAS 1240613-43-7), a certified reference material (molecular formula C4H4BrNO, MW 161.98 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C4H4BrNO |
| Molecular Weight | 161.98 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 4-Bromo-3-methylisoxazole (CAS 101084-19-9)
- 2-Bromo-4-methyloxazole (CAS 1060816-11-6)
- 4-Bromo-5-methyloxazole (CAS 1240601-01-7)
- 5-Bromo-3-methylisoxazole (CAS 1263378-26-2)
- 5-Bromo-2-methyloxazole (CAS 1391740-17-2)
- 2-Bromo-3-oxobutanenitrile (CAS 60930-93-0)
- 3-bromo-1,2-dihydropyrrol-5-one (CAS 947407-86-5)
- 3-Bromo-4-methylisoxazole (CAS 903131-37-3)
Recommended Standards
- 2-Bromofuran-3-amine (CAS 1227959-22-9)
- 5-(Bromomethyl)oxazole (CAS 127232-42-2)
- 4-(Bromomethyl)oxazole (CAS 1065073-37-1)
- 2-(Bromomethyl)oxazole (CAS 1065073-35-9)
- [1-(4-hydrazinylbenzoyl)pyrrolidin-2-yl]methanol hydrochloride (CAS 1432680-24-4)
- 2,5-Dichloro-3-iodotoluene (CAS 1806283-33-9)
- 2-((1-Oxo-2,3-dihydro-1H-inden-5-yl)oxy)acetic acid (CAS 28945-98-4)
- 2-Chloro-5-fluoro-3-hydroxy-4-methoxybenzaldehyde (CAS 2872659-30-6)
- Repaglinide Impurity 20 (CAS CATO-C4X-118620)
- 1,4,5,6-Tetrahydropyrrolo[3,4-C]Pyrazole (CAS 769895-06-9)
- 2-Amino-4-(2,4,4-trimethylpentan-2-yl)phenol (CAS 6073-20-7)
- 1-(1-carbamoylethyl)-1,2,3,4-tetrahydroquinoline-4-carboxylic acid (CAS 1511964-16-1)
- 3-AMINOQUINOLIN-4(1H)-ONE (CAS 81946-31-8)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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