ethyl 5-amino-1-(4-bromophenyl)-1H-pyrazole-4-carboxylate CAS 138907-71-8
| CAS No. | 138907-71-8 |
| Molecular Formula | C12H12BrN3O2 |
| Molecular Weight | 310.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of ethyl 5-amino-1-(4-bromophenyl)-1H-pyrazole-4-carboxylate is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies ethyl 5-amino-1-(4-bromophenyl)-1H-pyrazole-4-carboxylate (CAS 138907-71-8), a certified reference material (molecular formula C12H12BrN3O2, MW 310.15 g/mol) for analytical method development and quality control.
Based on its molecular formula C12H12BrN3O2, ethyl 5-amino-1-(4-bromophenyl)-1H-pyrazole-4-carboxylate contains a nitrogen-containing heterocyclic scaffold, 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 310.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures ethyl 5-amino-1-(4-bromophenyl)-1H-pyrazole-4-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H12BrN3O2 |
| Molecular Weight | 310.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related ethyl Standards
- Ethyl 5-amino-1-(2-bromophenyl)-1H-pyrazole-4-carboxylate (CAS 1019009-68-7)
- N-(3-(2-amino-1H-imidazol-4-yl)allyl)-4-bromo-1H-pyrrole-2-carboxamide (CAS 107019-95-4)
- Ethyl 5-amino-1-(4-bromophenyl)-1H-pyrazole-3-carboxylate (CAS 1264042-04-7)
- Ethyl 5-amino-1-(2-bromophenyl)-1H-pyrazole-3-carboxylate (CAS 1269294-14-5)
- Ethyl 5-amino-1-(3-bromophenyl)-1H-pyrazole-3-carboxylate (CAS 1427020-42-5)
- Methyl 3-amino-1-(3-bromobenzyl)-1H-pyrazole-4-carboxylate (CAS 1856071-63-0)
- 4-[(3-amino-4-bromo-1h-pyrazol-1-yl)methyl]benzohydrazide (CAS 375837-72-2)
- 6-Amino-1-benzyl-5-bromo-3-methyl-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 610259-81-9)
Recommended Standards
- 5,7-bis(trifluoromethyl)-1,8-naphthyridine-2-carboxylic acid (CAS 1379526-94-9)
- (S)-1-(3-bromo-5-(trifluoromethyl)phenyl)-2,2-dimethylpropan-1-amine (CAS 1389351-06-7)
- Isopropyl 2-bromo-5-(4H-1,2,4-triazol-4-yl)benzoate (CAS 1351386-88-3)
- (R)-1-(3-bromo-5-(trifluoromethyl)phenyl)-2,2-dimethylpropan-1-amine (CAS 1389879-32-6)
- Ethyl 5-amino-1H-pyrrole-2-carboxylate hydrochloride (CAS 547762-35-6)
- 2,4-Dichloro-6-fluorobenzotrifluoride (CAS 1806329-34-9)
- 2-Methyl-5-(pentan-2-yl)furan (CAS 94922-72-2)
- 4-(Cyclopentyloxy)-3-fluoroaniline hydrochloride (CAS 1354960-89-6)
- tert-Butyl 4-oxa-1,9-diazaspiro[5.5]undecane-1-carboxylate (CAS 1368040-61-2)
- Cyclohexanecarboximidamide Hydrochloride (CAS 2498-48-8)
- Methyl (4-methoxy-3-(2-oxopiperidin-1-yl)phenyl)carbamate (CAS 922958-30-3)
- Cloxacillin Impurity 26 (CAS CATO-C4X-159726)
- N-(2,4-dichloro-5-isopropoxyphenyl)-2-((2-oxo-2-((3-(trifluoromethyl)phenyl)amino)ethyl)sulfinyl)acetamide (CAS 341964-76-9)
- Semaglutide Impurity 122 (CAS CATO-C4X-2226122)
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