3-(4-Chlorophenyl)-2-methyl-[1,2,4]triazolo[5,1-b]quinazolin-9(3H)-one CAS 95353-74-5
| CAS No. | 95353-74-5 |
| Molecular Formula | C16H11ClN4O |
| Molecular Weight | 310.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-(4-Chlorophenyl)-2-methyl-[1,2,4]triazolo[5,1-b]quinazolin-9(3H)-one 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.
3-(4-Chlorophenyl)-2-methyl-[1,2,4]triazolo[5,1-b]quinazolin-9(3H)-one (CAS 95353-74-5), molecular formula C16H11ClN4O and molecular weight 310.74 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H11ClN4O, 3-(4-Chlorophenyl)-2-methyl-[1,2,4]triazolo[5,1-b]quinazolin-9(3H)-one contains a nitrogen-containing heterocyclic scaffold, 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 310.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C16H11ClN4O |
| Molecular Weight | 310.74 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
- 2-Chloro-N-(2-(pyridin-4-yl)pyrimidin-4-yl)benzamide (CAS 478039-51-9)
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- 2-Chloro-N-(2-(pyridin-3-yl)pyrimidin-4-yl)benzamide (CAS 478046-51-4)
- 4-Chloro-N-[2-(pyridin-3-yl)pyrimidin-4-yl]benzamide (CAS 866143-27-3)
- Methyl 2-((difluoromethyl)thio)acetate (CAS 83494-28-4)
- 5-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-2-(p-tolyl)-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridine (CAS 250714-13-7)
- Ethyl 4-butoxybenzoate (CAS 5365-43-5)
- 2-Chloro-6-(3-(trifluoromethyl)phenyl)nicotinonitrile (CAS 140692-92-8)
- Ethyl 2,3-Dicyanopropionate (CAS 40497-11-8)
- Ethyl 2-(2-chloroacetamido)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate (CAS 76981-88-9)
- Benzyl 2-amino-2-ethylbutanoate (CAS 1413936-87-4)
- 4-(Chloromethyl)-2-(pyridin-2-yl)thiazole, 97% (CAS 342025-41-6)
- Bromfenac Impurity 62 (CAS CATO-C4X-200262)
- Protein Kinase C? Peptide Substrate (CAS 120253-69-2)
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