Ethyl 2-(3-amino-4-bromo-1h-pyrazol-1-yl)butanoate CAS 1343033-98-6
| CAS No. | 1343033-98-6 |
| Molecular Formula | C9H14BrN3O2 |
| Molecular Weight | 276.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-(3-amino-4-bromo-1h-pyrazol-1-yl)butanoate (C9H14BrN3O2) 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.
Ethyl 2-(3-amino-4-bromo-1h-pyrazol-1-yl)butanoate (CAS 1343033-98-6), molecular formula C9H14BrN3O2 and molecular weight 276.13 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C9H14BrN3O2 |
| Molecular Weight | 276.13 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 DMSO, DMF, methanol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
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- (6-Bromo-5-methylpyridin-3-yl)(phenyl)methanone (CAS 1355202-27-5)
- Hydroxyzine dihydrochloride (CAS 2192-20-3)
- N-Methyl-4-chlorophenethylamine Hydrochloride (CAS 102236-57-7)
- 2-Cyano-5-phenylpenta-2,4-dienamide (CAS 24139-58-0)
- (3-(Aminomethyl)phenyl)methanesulfonamide (CAS 1178363-39-7)
- 3-(2-(Piperidin-4-yl)ethyl)-1H-indole hydrochloride (CAS 63845-42-1)
- 3-Cyclopropylisoxazol-5-amine (CAS 21080-91-1)
- 2-(4-Methyl-6-oxo-1,3-diphenyl-1,6-dihydro-7H-pyrazolo[3,4-b]pyridin-7-yl)acetic acid (CAS 1172810-92-2)
- (1S,4aS,10aR)-1-(Hydroxymethyl)-7-isopropyl-8-methoxy-1,4a-dimethyl-1,4,4a,9,10,10a-hexahydrophenanthren-2(3H)-one (CAS 262599-12-2)
- (2R,3R)-3-Amino-3-(3,5-dimethoxyphenyl)-2-hydroxypropanoic acid (CAS 1217726-90-3)
- Peptide 46 (H-4054.0500) (CAS 192122-40-0)
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