Ethyl 5,7-dichloro-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate CAS 876391-25-2
| CAS No. | 876391-25-2 |
| Molecular Formula | C10H9Cl2N3O2 |
| Molecular Weight | 274.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 5,7-dichloro-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Ethyl 5,7-dichloro-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 876391-25-2), a certified reference material (molecular formula C10H9Cl2N3O2, MW 274.10 g/mol) for analytical method development and quality control.
The molecular framework of Ethyl 5,7-dichloro-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate (C10H9Cl2N3O2) is characterized by a nitrogen-containing heterocyclic scaffold, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C10H9Cl2N3O2 |
| Molecular Weight | 274.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- Bis-trifluoroethyl Ethylphosphonate (CAS 650-16-8)
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- 4-Iodo-1-phenylbutan-1-one (CAS 65488-05-3)
- Dimethyl 1-(2-(3-(4-fluorophenyl)ureido)-2-oxoethyl)-1H-1,2,3-triazole-4,5-dicarboxylate (CAS 892278-01-2)
- 6-(3,5-Difluorophenoxy)pyridin-3-amine (CAS 1342739-14-3)
- 1,2-Dihydro-2,5-(diphenyl)-3H-1,2,4-triazol-3-one (CAS 118946-49-9)
- Ethyl 3-amino-5-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)thiophene-2-carboxylate (CAS 875163-89-6)
- 2-Hexyl-3-hydroxy-5-[(tetrahydro-2H-pyran-2-yl)oxy]-hexadecanoic Acid Methyl Ester (CAS 104801-68-5)
- 7-Aminocoumarin (CAS 19063-57-1)
- 7-(tert-Butoxycarbonyl)-5,6,7,8-tetrahydro-1,7-naphthyridine-4-carboxylic acid (CAS 1393583-75-9)
- 6-chloro-1-N-(propan-2-yl)benzene-1,2-diamine (CAS 1039985-85-7)
- 2-amino-2-(2-fluorophenyl)acetonitrile hydrochloride (CAS 1251923-68-8)
- Peptide Impurity (CAS CATO-CPTD788810)
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