3-Bromo-4,5-dihydroisoxazole-5-carboxylic acid CAS 1130365-33-1
| CAS No. | 1130365-33-1 |
| Molecular Formula | C4H4BrNO3 |
| Molecular Weight | 193.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Bromo-4,5-dihydroisoxazole-5-carboxylic acid (CAS 1130365-33-1), a certified reference material (molecular formula C4H4BrNO3, MW 193.98 g/mol) for analytical method development and quality control.
3-Bromo-4,5-dihydroisoxazole-5-carboxylic acid (C4H4BrNO3) contains an amide group, a carboxylic acid 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), 3-Bromo-4,5-dihydroisoxazole-5-carboxylic acid 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 | C4H4BrNO3 |
| Molecular Weight | 193.98 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 sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 3-Bromo-2,5-difluoropyridine (CAS 1211331-43-9)
- 3-Bromo-2,4-difluoropyridine (CAS 1227502-60-4)
- 4-Bromo-2,3-difluoropyridine (CAS 1227597-53-6)
- 6-Bromo-2,3-difluoropyridine (CAS 1257071-45-6)
- 4-Bromo-2,5-difluoropyridine (CAS 1349718-16-6)
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- 2-Bromo-3,4-difluoropyridine (CAS 1807197-86-9)
- 2-Bromo-3,5-difluoropyridine (CAS 660425-16-1)
Recommended Standards
- Crizotinib impurity 22 (CAS 3469-69-0)
- 5-Fluoro-1-methyl-1H-indazole-6-boronic acid (CAS 2096331-06-3)
- 4-Iodo-1H-imidazole (CAS 71759-89-2)
- 3-Iodofuran (CAS 29172-20-1)
- (3-Fluoro-4-(piperidine-1-carbonyl)phenyl)boronic acid (CAS 874289-10-8)
- 4-(4-Fluorobenzyl)-3,4-dihydrothieno[3,2-f][1,4]thiazepin-5(2H)-one (CAS 478080-74-9)
- 1-Ethynyl-3-nitro-5-(trifluoromethyl)benzene (CAS 2228611-47-8)
- 2-Methyl-1-((pyridin-4-ylmethyl)amino)propan-2-ol (CAS 1181600-71-4)
- 3-[4-[4-(aminomethyl)triazol-1-yl]phenyl]prop-2-ynenitrile (CAS 1644039-33-7)
- methyl (2E)-3-[3-(chlorosulfonyl)-4-methoxyphenyl]prop-2-enoate (CAS 1212782-37-0)
- 5,8a-Dimethyl-3,4,8,8a-tetrahydro-1,6-(2H,7H)-naphthalenedione (CAS 41019-71-0)
- Dabrafenib Impurity 21 (CAS CATO-C4X-303321)
- Itraconazole Impurity 15 (CAS 2508172-07-2)
- Osteoblast Activating Peptide (mouse, rat) (H-7262.0500) (CAS 1222950-80-2)
Why CATO?
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