Pyrimidine Impurity 3 CAS CATO-C4X-31753
| CAS No. | CATO-C4X-31753 |
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Pyrimidine Impurity 3 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 142.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Pyrimidine Impurity 3 (CAS CATO-C4X-31753) is a certified pharmaceutical impurity reference standard with the molecular formula C5H6N2O3 and a molecular weight of 142.11 g/mol.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Pyrimidine Impurity 3 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.
Physical & Chemical Properties
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 2 |
Related Pyrimidine Standards
- Pyrimidine-4-carbonyl chloride (CAS 184951-32-4)
- Pyrimidine-2-carbonyl Chloride (CAS 220769-83-5)
- Pyrimidine-2,4-diyldimethanol (CAS 4425-66-5)
- Pyrimidine-4,6-diyldimethanol (CAS 50345-29-4)
- Pyrimidine-2-sulfinic acid (CAS 288400-79-3)
- methyl pyrimidine-4-carboxylate (CAS 2450-08-0)
- methyl pyrimidine-5-carboxylate (CAS 34253-01-5)
- Pyrimidine-2-carbothioamide (CAS 4537-73-9)
Recommended Standards
- Furfural impurity 5 (CAS 1103461-95-5)
- Kojic Acid (CAS 501-30-4)
- Furfural impurity 4 (CAS CATO-C4X-24884)
- trans,trans-Muconic Acid (CAS 3588-17-8)
- Ipriflavone Impurity 3 (CAS 13057-73-3)
- Clindamycin Impurity 131 (CAS CATO-C4X-1341131)
- Adapalene EP Impurity C (CAS 43109-77-9)
- (2-(((2,4-Dimethylphenyl)amino)methyl)phenyl)methanol (CAS 327071-55-6)
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