4-(2-Aminoethyl)-2-(4-bromophenyl)-5-(4-methoxyphenyl)-1H-pyrazol-3(2H)-one sulfate CAS 1177332-03-4
| CAS No. | 1177332-03-4 |
| Molecular Formula | C18H18BrN3O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(2-Aminoethyl)-2-(4-bromophenyl)-5-(4-methoxyphenyl)-1H-pyrazol-3(2H)-one sulfate (C18H18BrN3O2H2O4S) contains a flavonoid core, an amide group, a sulfone 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-(2-Aminoethyl)-2-(4-bromophenyl)-5-(4-methoxyphenyl)-1H-pyrazol-3(2H)-one sulfate (CAS 1177332-03-4) is a high-purity analytical reference standard with the molecular formula C18H18BrN3O2H2O4S and a molecular weight of 486.34 g/mol.
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.
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 | C18H18BrN3O2 H2O4S |
| Molecular Weight | 486.34 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Aminoethyl Standards
- N-(2-Aminoethyl)oleamide phosphate (CAS 100021-80-5)
- Methyl 3-(2-aminoethyl)-4-methylbenzoate (CAS 1000551-41-6)
- 2-(2-Aminoethyl)-4-fluoro-N,N-dimethylaniline (CAS 1000551-95-0)
- 2-(2-Aminoethyl)-6-bromo-4-chlorophenol (CAS 1000575-19-8)
- N-(2-aminoethyl)-1-methyl-1H-pyrrole-2-carboxamide (CAS 1000931-92-9)
- n-(2-Aminoethyl)-1-methyl-4-(morpholine-4-sulfonyl)-1h-pyrrole-2-carboxamide (CAS 1000932-72-8)
- 4-[(2-aminoethyl)sulfamoyl]-1-methyl-1h-pyrrole-2-carboxamide (CAS 1000932-88-6)
- n-(2-Aminoethyl)-4,5-dibromo-1-methyl-1h-pyrrole-2-carboxamide (CAS 1000933-11-8)
Recommended Standards
- 5-Chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylic Acid (CAS 800401-68-7)
- 3-(4-Bromophenoxy)propane-1-sulfonyl chloride (CAS 1018549-42-2)
- (S)-3-(Trifluoromethyl)pyrrolidine-3-carboxylic acid (CAS 1334160-80-3)
- 7H-Pyrrolo[2,3-h]quinazolin-2-amine (CAS 827607-96-5)
- Hydroxytyrosol (CAS 10597-60-1)
- (3s)-3-{[(tert-butoxy)carbonyl]amino}-4-oxo-4-(prop-2-en-1-yloxy)butanoic acid (CAS 88224-27-5)
- 2-Bromo-1-(methoxymethoxy)-3-methylbenzene (CAS 2158298-52-1)
- di-tert-Butyl 6-oxo-1,4-diazepane-1,4-dicarboxylate (CAS 459417-40-4)
- 2-{1-[(2,4-dimethylphenyl)amino]ethylidene}-2,3-dihydro-1H-indene-1,3-dione (CAS 1024244-02-7)
- D-Lys20-Tirzepatide (CAS CATO-CPTD788914)
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