5-(4-Aminophenyl)-2,3-dihydro-1h-pyrazol-3-one CAS 908254-18-2
| CAS No. | 908254-18-2 |
| Molecular Formula | C9H9N3O |
| Molecular Weight | 175.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-(4-Aminophenyl)-2,3-dihydro-1h-pyrazol-3-one (CAS 908254-18-2) is a high-purity analytical reference standard with the molecular formula C9H9N3O and a molecular weight of 175.19 g/mol.
5-(4-Aminophenyl)-2,3-dihydro-1h-pyrazol-3-one (C9H9N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H9N3O |
| Molecular Weight | 175.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Aminophenyl Standards
- 1-(4-Aminophenyl)-2,3-dihydro-1h-imidazol-2-one (CAS 1016728-19-0)
- 5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 103755-57-3)
- 5-(4-Aminophenyl)oxazol-2-amine (CAS 13576-58-4)
- 5-(2-Aminophenyl)oxazol-2-amine (CAS 1934805-03-4)
- 5-(3-Aminophenyl)oxazol-2-amine (CAS 1936654-69-1)
- 1-(4-Aminophenyl)-1H-pyrazol-3(2H)-one (CAS 2044713-95-1)
- 3-(2-Aminophenyl)-1H-1,2,4-triazol-5-amine (CAS 890095-53-1)
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Recommended Standards
- 5-(Aminomethyl)quinoxalin-6-ol (CAS 766462-63-9)
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- 4-Methyl-5-(pyridin-4-yl)-1H-pyrazol-3(2H)-one (CAS 90280-21-0)
- 5,6,7,8-Tetrahydrocyclohepta[c]pyrrol-4(2H)-one (CAS 113880-81-2)
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- (Sp)-(1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl methyl phenylphosphonate (CAS 35671-02-4)
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