Ethyl 4-chloropyrazolo[1,5-a]quinoxaline-3-carboxylate CAS 62040-05-5
| CAS No. | 62040-05-5 |
| Molecular Formula | C13H10ClN3O2 |
| Molecular Weight | 275.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Ethyl 4-chloropyrazolo[1,5-a]quinoxaline-3-carboxylate (CAS 62040-05-5), molecular formula C13H10ClN3O2 and molecular weight 275.69 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H10ClN3O2, Ethyl 4-chloropyrazolo[1,5-a]quinoxaline-3-carboxylate 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 275.69 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.
CATO manufactures Ethyl 4-chloropyrazolo[1,5-a]quinoxaline-3-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 | C13H10ClN3O2 |
| Molecular Weight | 275.69 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 sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- Ethyl 5-chloropyrazolo[1,5-a]quinazoline-3-carboxylate (CAS 174842-56-9)
- Methyl 4-chloropyrazolo[1,5-a]quinoxaline-7-carboxylate (CAS 2842029-52-9)
- 2-[(6-chloropyrazolo[3,4-d]pyrimidin-1-yl)methoxy]ethyl-trimethyl-silane (CAS 2230521-64-7)
- 5-Chloropyrazolo[1,5-a]thieno[2,3-e]pyrimidine-3-carboxylic acid (CAS 680210-93-9)
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Recommended Standards
- Ethyl 4-chloroimidazo[1,5-a]quinoxaline-3-carboxylate (CAS 86110-26-1)
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- Ethyl 1-(4-chlorophenyl)-5-cyano-1H-pyrazole-4-carboxylate (CAS 98476-27-8)
- N-(3-Chloro-phenyl)-phthalamic acid (CAS 5406-21-3)
- 1-(2-Iodo-1-methoxyethyl)-4-methylbenzene (CAS 870695-06-0)
- 879037-94-2 2-[5-Amino-2-(2-methylpropyl)-1H-benzimidazol-1-yl]ethanol MFCD08056114 (CAS 879037-94-2)
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- 4,5-Diethoxyphthalonitrile (CAS 118132-09-5)
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- Tau Peptide (294-305) (human) trifluoroacetate salt (CAS 1428135-29-8)
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