7-Chloro-1-methyl-5-phenyl-[1,2,4]triazolo[4,3-a]quinazoline CAS 57370-21-5
| CAS No. | 57370-21-5 |
| Molecular Formula | C16H11ClN4 |
| Molecular Weight | 294.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7-Chloro-1-methyl-5-phenyl-[1,2,4]triazolo[4,3-a]quinazoline.
7-Chloro-1-methyl-5-phenyl-[1,2,4]triazolo[4,3-a]quinazoline (CAS 57370-21-5) is a high-purity analytical reference standard with the molecular formula C16H11ClN4 and a molecular weight of 294.74 g/mol.
Structurally, 7-Chloro-1-methyl-5-phenyl-[1,2,4]triazolo[4,3-a]quinazoline (C16H11ClN4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 294.74 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 7-Chloro-1-methyl-5-phenyl-[1,2,4]triazolo[4,3-a]quinazoline 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 | C16H11ClN4 |
| Molecular Weight | 294.74 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 1-((4-Chloro-3,5-dimethylphenoxy)methyl)-1h-pyrazole-3-carbohydrazide (CAS 1004193-92-3)
- 2-Chloro-1,3-bis(1,3-dimethyl-1h-pyrazol-4-yl)propane-1,3-dione (CAS 1006344-26-8)
- 2-Chloro-1,3-bis(1,5-dimethyl-1h-pyrazol-4-yl)propane-1,3-dione (CAS 1006356-88-2)
- 2-Chloro-1-(4-(1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl)ethan-1-one (CAS 1258826-89-9)
- 4-Chloro-8-cycloheptylpteridine-6,7(5H,8H)-dione (CAS 1708401-52-8)
- 1-Benzyl-6-chloro-2-oxo-1,2-dihydroquinoline-3-carbonitrile (CAS 89479-58-3)
- 1-Benzyl-7-chloro-2-oxo-1,2-dihydroquinoline-3-carbonitrile (CAS 89479-60-7)
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Recommended Standards
- 4-(4-Chlorophenoxy)pyrrolo[1,2-a]quinoxaline (CAS 338401-28-8)
- Azido-PEG3-chloroacetamide (CAS 604766-23-6)
- 3-((2-Chloro-1H-indol-3-yl)methylene)indolin-2-one (CAS 220749-41-7)
- N-(4-Butoxy-6-chloropyrido[3,2-d]pyrimidin-2-yl)acetamide (CAS 897362-17-3)
- 7-Bromo-5-methylbenzofuran (CAS 35700-48-2)
- Ethyl 4-formylthiazole-5-carboxylate (CAS 544704-32-7)
- 1,4-Diamino-4-(trifluoromethyl)cyclohexane-1-carboxylic acid (CAS 1334147-22-6)
- Mianserin Impurity 81 (CAS 73771-03-6)
- 1-Cyclopropoxy-3-isopropyl-2-methylbenzene (CAS 1243456-58-7)
- Finerenone Impurity 70 (CAS CATO-C4X-288070)
- 2,2-Dimethyl-1,3-benzodioxole-4-acetic Acid Methyl Ester (CAS 38515-62-7)
- Arotinolol Impurity 64 (CAS CATO-C4X-185464)
- (3-fluoro-1-bicyclo[1.1.1]pentanyl)methanamine hydrochloride (CAS 2108917-20-8)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
Why CATO?
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