Chlorthalidone-d4 CAS 1794941-44-8
| CAS No. | 1794941-44-8 |
| Molecular Formula | - |
| Molecular Weight | 342.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Chlorthalidone-d4 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.
Chlorthalidone-d4 (CAS 1794941-44-8) is a high-purity analytical reference standard with the molecular formula C14H7D4ClN2O4S and a molecular weight of 342.79 g/mol.
The molecular framework of Chlorthalidone-d4 (C14H7D4ClN2O4S) is characterized by deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H7D4ClN2O4S |
| Molecular Weight | 342.79 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorthalidone Standards
- Chlorthalidone impurity 19 (CAS CATO-C4X-158519)
- Chlorthalidone Impurity 7 (CAS 345930-31-6)
- Chlorthalidone (CAS 77-36-1)
- Chlorthalidone impurity 16 (CAS CATO-C4X-158516)
- Chlorthalidone impurity 17 (CAS CATO-C4X-158517)
- Chlorthalidone impurity 20 (CAS 96512-76-4)
- Chlorthalidone Impuruty 8 (CAS 82875-49-8)
- Chlorthalidone impurity 18 (CAS 87177-16-0)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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