4,6,7-trichloroquinazoline CAS 57940-05-3
| CAS No. | 57940-05-3 |
| Molecular Formula | C8H3Cl3N2 |
| Molecular Weight | 233.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,6,7-trichloroquinazoline (CAS 57940-05-3) is a high-purity analytical reference standard with the molecular formula C8H3Cl3N2 and a molecular weight of 233.48 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, 4,6,7-trichloroquinazoline is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 233.48 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.
As a certified reference material (CRM), 4,6,7-trichloroquinazoline 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.
Physical & Chemical Properties
| Molecular Formula | C8H3Cl3N2 |
| Molecular Weight | 233.48 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related trichloroquinazoline Standards
- 4,7,8-Trichloroquinazoline (CAS 1027775-18-3)
- 2,4,5-Trichloroquinazoline (CAS 134517-55-8)
- 2,4,6-Trichloroquinazoline (CAS 20028-68-6)
- 2,4,7-Trichloroquinazoline (CAS 6625-94-1)
- 2,6,7-Trichloroquinazoline (CAS 2089319-37-7)
- 4,6,8-Trichloroquinazoline (CAS 19815-21-5)
- 2,4,8-trichloroquinazoline (CAS 62484-29-1)
- 2,5,6-trichloroquinazoline (CAS 67092-21-1)
Recommended Standards
- 4,6,7-Trichlorocinnoline (CAS 68211-16-5)
- 4,5,7-Trichloro-1,6-naphthyridine (CAS 2089301-45-9)
- 4,7,8-Trichlorocinnoline (CAS 856179-55-0)
- 2,6,7-Trichloroquinoxaline (CAS 41213-31-4)
- 421-14-7 Methane, trifluoromethoxy- Ether, methyl trifluoromethyl Methyl perfluoromethyl ether Methyl trifluoromethyl ether Trifluoromethoxymethane Trifluoromethoxymethone (CAS 421-14-7)
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- 2-Chloroethyl methacrylate (CAS 1888-94-4)
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- 4-Bromo-5-hydroxynicotinonitrile (CAS 1805248-13-8)
- Anti-Inflammatory Peptide 3 (CAS 118850-73-0)
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