tert-butyl 5-chloropyrazolo[4,3-d]pyrimidine-1-carboxylate CAS 1934697-96-7
| CAS No. | 1934697-96-7 |
| Molecular Formula | C10H19ClN4O2 |
| Molecular Weight | 262.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of tert-butyl 5-chloropyrazolo[4,3-d]pyrimidine-1-carboxylate (C10H19ClN4O2) is characterized by an amide group, a carboxylic acid 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
tert-butyl 5-chloropyrazolo[4,3-d]pyrimidine-1-carboxylate (CAS 1934697-96-7), molecular formula C10H19ClN4O2 and molecular weight 262.74 g/mol, is a CATO reference standard with documented purity and traceability.
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 tert-butyl 5-chloropyrazolo[4,3-d]pyrimidine-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 | C10H19ClN4O2 |
| Molecular Weight | 262.74 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Recommended Standards
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