3-(3,4-Dichlorophenyl)-N-phenyl-[1,2,4]triazolo[4,3-c]quinazolin-5-amine CAS 338977-98-3
| CAS No. | 338977-98-3 |
| Molecular Formula | C21H13Cl2N5 |
| Molecular Weight | 406.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, 3-(3,4-Dichlorophenyl)-N-phenyl-[1,2,4]triazolo[4,3-c]quinazolin-5-amine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 406.27 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.
3-(3,4-Dichlorophenyl)-N-phenyl-[1,2,4]triazolo[4,3-c]quinazolin-5-amine (CAS 338977-98-3), molecular formula C21H13Cl2N5 and molecular weight 406.27 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 | C21H13Cl2N5 |
| Molecular Weight | 406.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Dichlorophenyl Standards
- 3-(2,4-Dichlorophenyl)-N-phenyl-[1,2,4]triazolo[4,3-c]quinazolin-5-amine (CAS 477853-43-3)
- 4-(2,4-Dichlorophenyl)-5-[(Z)-2-phenyldiazen-1-yl]-2-(pyridin-3-yl)pyrimidine (CAS 338747-39-0)
- 4-(2,4-Dichlorophenyl)-2-morpholino-5-(4H-1,2,4-triazol-3-yl)thiophene-3-carbonitrile (CAS 1202041-71-1)
- 3-(2-((3,4-Dichlorophenyl)amino)thiazol-5-yl)-3-oxo-N-phenylpropanamide (CAS 241132-49-0)
- alpha-[(2,4-Dichlorophenyl)Methylene]-2-Nitro-4-(Trifluoromethyl)-Benzeneacetic Acid (CAS 38635-54-0)
- Bis(2,4-dichlorophenyl)phosphorochloridate (CAS 14254-41-2)
- 2,4-Dichlorophenyl (3E)-3-{[(2,4-dichlorophenyl)methoxy]imino}propanoate (CAS 860787-60-6)
- 2,4-Dichlorophenyl (3Z)-3-{[(2,6-dichlorophenyl)methoxy]imino}propanoate (CAS 338395-32-7)
Recommended Standards
- 2-(5-Bromo-2-ethoxy-4-formylphenoxy)-N-phenethylacetamide (CAS 692269-22-0)
- Ethyl 2-{4-bromo-2-methoxy-6-[(1Z)-[(4-methylphenyl)imino]methyl]phenoxy}acetate (CAS 338750-65-5)
- 2-(2-Bromo-6-ethoxy-4-formylphenoxy)-N-(2,4-dimethylphenyl)acetamide (CAS 701289-18-1)
- Methyl 2-amino-4-(4-bromophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate (CAS 397875-40-0)
- (R)-C5-TunaPhos (CAS 301847-91-6)
- 2,3,4-Trichloro-5-fluorobenzoyl chloride (CAS 115549-05-8)
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- 1-(Hydroxymethyl)indan (CAS 1196-17-4)
- Antrodin B (Camphorataimide B) (CAS 656830-25-0)
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- Methyl 5-amino-2-bromo-3-fluorobenzoate (CAS 1036389-05-5)
- 3-(4-Chlorophenyl)-1,1,1-trifluoropropan-2-amine (CAS 1242340-06-2)
- 1-[3-(6-Chloro-2-methyl-pyrimidin-4-yl)-piperidin-1-yl]-2-methoxy-ethanone (CAS 1316217-89-6)
- Des-Trp25-Tirzepatide (CAS CATO-CPTD788948)
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