5,7-dichloro-1-ethyl-1H-pyrazolo[4,3-d]pyrimidine CAS 928767-18-4
| CAS No. | 928767-18-4 |
| Molecular Formula | C7H14Cl2N4 |
| Molecular Weight | 225.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 5,7-dichloro-1-ethyl-1H-pyrazolo[4,3-d]pyrimidine (C7H14Cl2N4) is characterized by a nitrile group, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
5,7-dichloro-1-ethyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 928767-18-4) is a high-purity analytical reference standard with the molecular formula C7H14Cl2N4 and a molecular weight of 225.12 g/mol.
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 5,7-dichloro-1-ethyl-1H-pyrazolo[4,3-d]pyrimidine 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 | C7H14Cl2N4 |
| Molecular Weight | 225.12 g/mol |
| 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related dichloro Standards
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- tert-Butyl 3-(methylamino)propanoate (CAS 143707-72-6)
- 3-Oxa-1-azaspiro[4.6]undecane-2,4-dione (CAS 7690-59-7)
- Ethyl 5-amino-1-(2-bromophenyl)-1H-pyrazole-4-carboxylate (CAS 1019009-68-7)
- 2-(Difluoromethyl)-3,5-dimethoxy-6-hydroxypyridine (CAS 1806040-95-8)
- 1-Allyl-4-benzyloxybenzene (CAS 90617-59-7)
- 3-(2,4-Dioxo-1,2-dihydropyrrolo[2,1-f][1,2,4]triazin-3(4H)-yl)propanoic acid (CAS 1540083-27-9)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
Why CATO?
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