Pyrimethamine N3-Oxide CAS CATO-C4X-20441
| CAS No. | CATO-C4X-20441 |
| Molecular Formula | C12H13ClN4O |
| Molecular Weight | 264.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Pyrimethamine N3-Oxide 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 Pyrimethamine N3-Oxide (CAS CATO-C4X-20441), a certified reference material (molecular formula C12H13ClN4O, MW 264.71 g/mol) for analytical method development and quality control.
The molecular framework of Pyrimethamine N3-Oxide (C12H13ClN4O) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H13ClN4O |
| Molecular Weight | 264.71 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Pyrimethamine Standards
- Pyrimethamine Impurity 4 (CAS 91284-15-0)
- Pyrimethamine-D3 (CAS 1189936-99-9)
- Pyrimethamine EP Impurity D (CAS 55474-41-4)
- Pyrimethamine (CAS 58-14-0)
- Pyrimethamine Impurity 1 (CAS 772-79-2)
- Pyrimethamine Impurity 3 (CAS 3275-44-3)
- Pyrimethamine EP Impurity A (CAS 55474-40-3)
- Pyrimethamine Impurity 4 (CAS CATO-C4X-20444)
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