4-Chloro-2-(4-methoxyphenyl)quinazoline CAS 55391-00-9
| CAS No. | 55391-00-9 |
| Molecular Formula | C15H11ClN2O |
| Molecular Weight | 270.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 4-Chloro-2-(4-methoxyphenyl)quinazoline is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 270.71 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
4-Chloro-2-(4-methoxyphenyl)quinazoline (CAS 55391-00-9), molecular formula C15H11ClN2O and molecular weight 270.71 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C15H11ClN2O |
| Molecular Weight | 270.71 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
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- 4-chloro-2-(3-methoxyphenyl)quinazoline (CAS 1019449-61-6)
- 6-Chloro-2-(m-tolyl)imidazo[1,2-a]pyridine-3-carbaldehyde (CAS 1048917-39-0)
- Ethyl 4-(5-chloro-2-methoxyphenyl)-4-oxobutanoate (CAS 107774-17-4)
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- 5-[chloro(phenyl)methyl]-3-phenyl-1,2,4-oxadiazole (CAS 117761-94-1)
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Recommended Standards
- 4-Chloro-2-(1-phenyl-1H-pyrazol-5-yl)phenol (CAS 36124-03-5)
- 4'-Fluoro-[1,1'-biphenyl]-3-sulfonylchloride (CAS 861248-58-0)
- 4-Benzyl-8-chlorophthalazin-1(2H)-one (CAS 66294-16-4)
- 5-(2-Chlorophenyl)-2-oxo-2,3-dihydro-1H-1,4-benzodiazepine (CAS 3022-68-2)
- 1-(3-Hydroxyphenyl)thiourea (CAS 3394-05-6)
- 2-((8-Methyl-2-oxo-4-phenyl-2h-chromen-7-yl)oxy)propanoic acid (CAS 307547-35-9)
- n-Methyl-1-(3-methyl-1-propoxycyclohexyl)methanamine (CAS 1249051-62-4)
- 2-[(4-Chlorophenyl)sulfanyl]-4,6-dimethyl-3-(4-methylbenzenesulfonyl)pyridine (CAS 478245-42-0)
- (3Z)-3-{[(4-fluorophenyl)amino]methylidene}-1,3-dihydro-2-benzothiophen-1-one (CAS 1164523-83-4)
- 3-(2-aminoethyl)cyclobutan-1-ol hydrochloride (CAS 1789007-32-4)
- 2-[4-(2-aminoethyl)phenoxy]-n-(4-methylphenyl)acetamide hydrochloride (CAS 1197980-23-6)
- 3-Ethyl-1-(4-fluorophenyl)-1H-pyrazol-5-amine (CAS 1226221-27-7)
- 4-Hydrazinyl-2-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidine (CAS 879641-59-5)
- Semaglutide impurity 64 (CAS CATO-C4X-222664)
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