Ethyl 4-chloro-2-(methylsulfonyl)pyrimidine-5-carboxylate CAS 98490-76-7
| CAS No. | 98490-76-7 |
| Molecular Formula | C8H9ClN2O4S |
| Molecular Weight | 264.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 4-chloro-2-(methylsulfonyl)pyrimidine-5-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.
Ethyl 4-chloro-2-(methylsulfonyl)pyrimidine-5-carboxylate (CAS 98490-76-7), molecular formula C8H9ClN2O4S and molecular weight 264.69 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 4-chloro-2-(methylsulfonyl)pyrimidine-5-carboxylate (C8H9ClN2O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 264.69 g/mol, it falls into the medium-molecular-weight range. 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 | C8H9ClN2O4S |
| Molecular Weight | 264.69 g/mol |
| 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 methanol, ethanol, DMSO |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
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Recommended Standards
- Fosaprepitant Impurity 874 (CAS 538-37-4)
- Ethyl 5-chloro-2-(methylsulfonyl)pyrimidine-4-carboxylate (CAS 325723-07-7)
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- Upacicalcet Sodium Impurity 5 (CAS CATO-C4X-33925)
- 2-NITRO-P-TOLUNITRILE 2-NITRO-P-TOLUONITRILE 26830-95-5 4-Methyl-2-nitrobenzonitrile AS02388 (CAS 26830-95-5)
- 4-(2-Thiazolyl)phenol (CAS 81015-49-8)
- 8-Bromo-1H-quinoxalin-2-one (CAS 1092563-82-0)
- Diethyl 3,5-dimethoxybenzylphosphonate (CAS 108957-75-1)
- Tenofovir alafenamide impurity 84 (CAS 2734880-21-6（free base）)
- Nitrazepam Impurity 3 (CAS 20821-91-4)
- 2-(Ethoxymethyl)-6-methyl-3,4-dihydropyrimidin-4-one (CAS 23862-05-7)
- Methyl 4-(3,4-difluorophenyl)-2-fluorobenzoate (CAS 1820640-08-1)
- methyl 2,4-dioxopyrrolidine-3-carboxylate (CAS 51925-57-6)
- GnRH Associated Peptide (GAP) (1-13), human (CAS 100111-07-7)
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