1-Ethyl-4-(phenylamino)-[1,2,4]triazolo[4,3-a]quinazolin-5(4H)-one CAS 148989-36-0
| CAS No. | 148989-36-0 |
| Molecular Formula | C17H15N5O |
| Molecular Weight | 305.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-Ethyl-4-(phenylamino)-[1,2,4]triazolo[4,3-a]quinazolin-5(4H)-one (CAS 148989-36-0), molecular formula C17H15N5O and molecular weight 305.33 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C17H15N5O, 1-Ethyl-4-(phenylamino)-[1,2,4]triazolo[4,3-a]quinazolin-5(4H)-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 305.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H15N5O |
| Molecular Weight | 305.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 5 |
Related Ethyl Standards
- N'-(4-(Phenylamino)phenyl)pyrimidine-5-carboximidhydrazide (CAS 76521-25-0)
- 2-((2-(Phenylamino)pyrimidin-4-yl)amino)benzoic acid (CAS 89450-91-9)
- 2-Oxo-2-(phenylamino)ethyl quinoline-2-carboxylate (CAS 749894-98-2)
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- 1-Phenyl-3-(2-(phenylamino)phenyl)propan-1-ol (CAS 67176-97-0)
- (2E)-3-{[4-(phenylamino)phenyl]amino}-2-(1H-1,2,3,4-tetrazol-5-yl)prop-2-enenitrile (CAS 683799-78-2)
- 2-(Phenylamino)-N-(thiazol-2-yl)thiazole-4-carboxamide (CAS 1105229-12-6)
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Recommended Standards
- Ethyl [2,2':6',2''-terpyridine]-4'-carboxylate (CAS 148332-31-4)
- PF 06447475 (CAS 1527473-33-1)
- (S)-2-Benzyl 1-tert-butyl 4-oxoazetidine-1,2-dicarboxylate (CAS 146849-54-9)
- 1-Benzyl 3-ethyl 4-oxopiperidine-1,3-dicarboxylate (CAS 154548-45-5)
- Methyl 3-amino-1-methyl-1H-indole-2-carboxylate (CAS 1380399-14-3)
- 4-(2-Chlorophenyl)thiomorpholine-3,5-dione 1-oxide (CAS 338421-44-6)
- Ethyl 5-amino-1-(3-methylphenyl)-1H-pyrazole-3-carboxylate (CAS 1264049-21-9)
- Udenafil-d7 (CAS 1175992-76-3)
- 2-(Methylamino)acetonitrile sulfate (CAS 33986-15-1)
- tert-Butyl 1,6-diazaspiro[3.5]nonane-6-carboxylate oxalate(2:1) (CAS 1630906-45-4)
- 4-(2,4-Dichlorobenzoyl)-1-methyl-N'-(2-phenoxyethanimidoyl)-1H-pyrrole-2-carbohydrazide (CAS 338418-58-9)
- 3-Amino-N-(2-chlorophenethyl)-6-(pyridin-4-yl)thieno[2,3-b]pyridine-2-carboxamide (CAS 496019-25-1)
- 5-Bromo-3-chlorobenzene-1,2-diamine (CAS 16429-44-0)
- C-Type Natriuretic Peptide (32-53) (human, porcine, rat) (CAS 127869-51-6)
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