Ethyl 4-[2-(4-Chlorophenyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]piperazine-1-carboxylate CAS 931728-33-5
| CAS No. | 931728-33-5 |
| Molecular Formula | C19H21ClN6O2 |
| Molecular Weight | 400.86 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 Ethyl 4-[2-(4-Chlorophenyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]piperazine-1-carboxylate.
Ethyl 4-[2-(4-Chlorophenyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]piperazine-1-carboxylate (CAS 931728-33-5) is a high-purity analytical reference standard with the molecular formula C19H21ClN6O2 and a molecular weight of 400.86 g/mol.
The molecular framework of Ethyl 4-[2-(4-Chlorophenyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]piperazine-1-carboxylate (C19H21ClN6O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
CATO manufactures Ethyl 4-[2-(4-Chlorophenyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]piperazine-1-carboxylate 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 | C19H21ClN6O2 |
| Molecular Weight | 400.86 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 6 |
Related Ethyl Standards
- Ethyl 3-[({[(2-chlorophenyl)carbamoyl]methyl}(methyl)amino)methyl]-1-benzofuran-2-carboxylate (CAS 1057883-70-1)
- (3-(4-Chlorophenyl)-9-methyl-5-phenyl-7H-furo[3,2-g]chromen-7-ylidene)hydrazine (CAS 1092333-66-8)
- 2-[(5Z)-5-[(3-Chlorophenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]-2,3-dihydro-1H-isoindole-1,3-dione (CAS 477859-22-6)
- 2-[7-(4-Chlorophenyl)-6-(3,5-dimethyl-1H-pyrazol-1-yl)pyrazolo[1,5-a]pyrimidin-3-yl]pyridine (CAS 957002-67-4)
- 3-(2-Chlorophenyl)-N-(3,4-dimethoxyphenethyl)-5-methylisoxazole-4-carboxamide (CAS 217317-62-9)
- 4-(4-Chlorophenyl)-2-[(E)-2-[(4-methoxyphenyl)amino]ethenyl]-6-methylpyridine-3,5-dicarbonitrile (CAS 337924-13-7)
- 4-(2-Chlorophenyl)-9-methyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepine-2-propanoic Acid Methyl Ester (CAS 100827-83-6)
- (S)-2-[4-(4-Chlorophenyl)-2,3,9-trimethyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-6-yl]acetic Acid (CAS 202592-23-2)
Recommended Standards
- 10L-751 2-[(5Z)-5-[(4-chlorophenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]-2,3-dihydro-1H-isoindole-1,3-dione 477845-32-2 (CAS 477845-32-2)
- Dabigatran Impurity 80 (CAS 1307233-94-8)
- 2-Chloro-6-(4,5-diphenyl-1H-imidazol-1-yl)-7-ethyl-7H-purine (CAS 916976-70-0)
- Melphalan Impurity 28 (CAS CATO-C4X-198828)
- 2-Ethoxy-6-methoxyphenol (CAS 90534-95-5)
- (S)-4-Methyl-2,2,2-triphenyl-1,3,2l5-dioxaphospholane (CAS 104762-38-1)
- Propyl 1,3-dioxo-2-(p-tolyl)isoindoline-5-carboxylate (CAS 297742-87-1)
- 5-Bromo-1-fluoro-2-methoxy-3-methylbenzene (CAS 1226799-88-7)
- N-(4-Methoxybenzyl)-1-(naphthalen-1-yl)methanamine hydrobromide (CAS 1609402-90-5)
- 4-Chloro-1-cyclopropylbutan-1-one (CAS 98430-99-0)
- 8-Fluoro-5-nitroquinoline-2-carboxylic acid (CAS 1420791-58-7)
- Ethyl 2-cyano-2-cyclobutylideneacetate (CAS 90972-11-5)
- Dimethyl 3,3'-(((3-formylphenyl)methylene)bis(sulfanediyl))dipropionate (CAS 115104-22-8)
- Semaglutide impurity 274 (CAS CATO-C4X-2226274)
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