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
| CAS No. | 1574622-30-2 |
| Molecular Formula | C21H22ClN3O2 |
| Molecular Weight | 383.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), N-(3-Chlorophenyl)-5-ethyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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), molecular formula C21H22ClN3O2 and molecular weight 383.87 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H22ClN3O2, N-(3-Chlorophenyl)-5-ethyl-11-oxo-5H,5aH,6H,7H,8H,9H,11H-pyrido[2,1-b]quinazoline-3-carboxamide contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 383.87 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.
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 | 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
- 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-(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-methyl-12-oxo-5H,5aH,6H,7H,8H,9H,10H,12H-azepino[2,1-b]quinazoline-3-carboxamide (CAS 1775471-59-4)
- 3-(4-chlorophenyl)-2-cyclohexyl-1-oxo-1,2,3,4-tetrahydro-4-isoquinolinecarboxylic acid (CAS 400073-91-8)
- 1-(4-{[4-(4-chlorophenyl)piperazino]carbonyl}phenyl)-2-pyrrolidinone 478039-73-5 KS-000036IV (CAS 478039-73-5)
- (4-((4-Chlorophenyl)amino)quinolin-2-yl)(thiomorpholino)methanone (CAS 1226435-91-1)
- (4-((4-Chlorophenyl)amino)quinolin-3-yl)(thiomorpholino)methanone (CAS 1359177-31-3)
- (2E)-3-{4-[(3-chlorophenyl)methoxy]phenyl}-N-[(thiophen-2-yl)methyl]prop-2-enamide (CAS 477871-13-9)
Recommended Standards
- 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)
- (2S,4S)-1-(tert-Butoxycarbonyl)-4-(2-chloro-4-isopropylphenoxy)-2-pyrrolidinecarboxylic acid (CAS 1354486-70-6)
- (2S,4S)-1-(tert-Butoxycarbonyl)-4-(4-chloro-2-isopropylphenoxy)-2-pyrrolidinecarboxylic acid (CAS 1354486-29-5)
- 4-[(2-Chloro-5-methylphenoxy)methyl]-3-(2,6-difluorophenyl)-2,3-dihydro-1,3-thiazole-2-thione (CAS 866153-94-8)
- 2-(2-Amino-4-(bromomethyl)-6-(difluoromethyl)pyridin-3-yl)acetonitrile (CAS 1806821-88-4)
- 1-(10H-phenothiazin-10-yl)-2-((5-(o-tolyl)-1,3,4-oxadiazol-2-yl)thio)ethan-1-one (CAS 332357-74-1)
- 2-Methoxy-5-nitrobenzene-1-sulfonyl chloride (CAS 81118-92-5)
- Ethyl 2-[3-cyano-4-(3-hydroxy-2-methylpropoxy)phenyl]-4-methyl-1,3-thiazole-5-carboxylate (CAS 1572503-72-0)
- N-(2-(5-chlorothiophen-2-yl)ethyl)thietan-3-amine (CAS 1864113-46-1)
- 4-Amino-6-methyl-2H-pyran-2-one hydrochloride (CAS 1956318-23-2)
- 2-Amino-5-chloro-3-iodopyridine 211308-81-5 MFCD07644578 SY041328 (CAS 211308-81-5)
- Dimethyl 2-(2-cyanoethyl)-1,2,3,4-tetrahydronaphthalene-2,6-dicarboxylate (CAS 2028324-90-3)
- 7-Amino-2-methylisoquinoline-1,3(2h,4h)-dione (CAS 1344117-38-9)
- Semaglutide impurity 77 (CAS CATO-C4X-222677)
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