| CAS No. | 62285-59-0 |
| Molecular Formula | - |
| Molecular Weight | 144.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
4-Chlorobenzaldehyde-2,3,5,6-d4 (CAS 62285-59-0), molecular formula C7HD4ClO and molecular weight 144.59 g/mol, is a CATO reference standard with documented purity and traceability.
4-Chlorobenzaldehyde-2,3,5,6-d4 (C7HD4ClO) contains deuterium isotope labeling, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C7HD4ClO |
| Molecular Weight | 144.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |