4-Chloro-7-methoxy-6-nitroquinazoline CAS 55496-69-0
| CAS No. | 55496-69-0 |
| Molecular Formula | C9H16ClN3O3 |
| Molecular Weight | 249.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
4-Chloro-7-methoxy-6-nitroquinazoline (CAS 55496-69-0) is a high-purity analytical reference standard with the molecular formula C9H16ClN3O3 and a molecular weight of 249.69 g/mol.
Structurally, 4-Chloro-7-methoxy-6-nitroquinazoline (C9H16ClN3O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 249.69 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 4-Chloro-7-methoxy-6-nitroquinazoline under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H16ClN3O3 |
| Molecular Weight | 249.69 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- Ethyl 4-chloro-2-methylquinoline-6-carboxylate (CAS 100375-87-9)
- 1-(2-Chloro-6-ethoxyquinolin-3-yl)ethanone (CAS 1017429-04-7)
- 2-Chloro-6-(4-methoxybenzyloxy)pyridine (CAS 1020253-23-9)
- 3-Chloro-2-(4-methoxybenzyloxy)pyridine (CAS 1033202-56-0)
- 6-Chloro-1-(cyclopropanecarbonyl)-2,3-dihydroquinolin-4(1H)-one (CAS 103604-80-4)
- Methyl 4-chloro-7,8-dimethylquinoline-2-carboxylate (CAS 1133115-70-4)
- 6-Chloro-8-methyl-1-(2-oxopropyl)quinolin-4(1H)-one (CAS 1208825-90-4)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com