N-(3-Chloro-4-methylphenyl)-5-methyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide CAS 1574626-54-2
| CAS No. | 1574626-54-2 |
| Molecular Formula | C21H22ClN3O2 |
| Molecular Weight | 383.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 383.87 g/mol gives N-(3-Chloro-4-methylphenyl)-5-methyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N-(3-Chloro-4-methylphenyl)-5-methyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide (CAS 1574626-54-2) is a high-purity analytical reference standard with the molecular formula C21H22ClN3O2 and a molecular weight of 383.87 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, N-(3-Chloro-4-methylphenyl)-5-methyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 383.87 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C21H22ClN3O2 |
| Molecular Weight | 383.87 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related N Standards
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- 7-Chloro-N-(2-(2-morpholinoethoxy)phenyl)quinolin-4-amine (CAS 64039-55-0)
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Recommended Standards
- N-(3-Chlorophenyl)-5-ethyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide (CAS 1574622-30-2)
- N-(3-Chlorophenyl)-5-methyl-12-oxo-5H,5aH,6H,7H,8H,9H,10H,12H-azepino[2,1-b]quinazoline-3-carboxamide (CAS 1775347-71-1)
- N-(4-Chlorophenyl)-5-ethyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide (CAS 1574584-05-6)
- N-(4-Chlorophenyl)-5-methyl-12-oxo-5H,5aH,6H,7H,8H,9H,10H,12H-azepino[2,1-b]quinazoline-3-carboxamide (CAS 1775471-59-4)
- Ethyl 5-bromo-4-chloropyrimidine-2-carboxylate (CAS 1934435-89-8)
- 3,4-Difluoro-2-methoxyaniline (CAS 114076-35-6)
- 2,4,6-Triethoxypyrimidine-5-carboxylic acid (CAS 4320-00-7)
- 1-Methylpiperidin-4-yl butyrate (CAS 311802-59-2)
- 1-Amino-3-(2-bromo-4-fluorophenyl)propan-2-ol (CAS 1479386-87-2)
- (1-Isopropyl-3-nitro-1h-pyrazol-5-yl)methanol (CAS 1245772-03-5)
- 4-Ethyl-2-propionylcyclohexan-1-one (CAS 1248155-96-5)
- Methyl 1-(4-methoxyphenyl)-3,6-dimethyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 937600-02-7)
- (2R,3R,4R,5R)-5-(6-Amino-9H-purin-9-yl)-4-chloro-2-(hydroxymethyl)tetrahydrofuran-3-ol (CAS 2627-62-5)
- Peptide Impurity 64 (CAS CATO-CPTD788964)
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