3-Chloroisonicotinaldehyde hydrate CAS 1628557-03-8
| CAS No. | 1628557-03-8 |
| Molecular Formula | C6H4ClNO |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Chloroisonicotinaldehyde hydrate (CAS 1628557-03-8), molecular formula C6H4ClNOH2O and molecular weight 159.57 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 3-Chloroisonicotinaldehyde hydrate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 159.57 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 3-Chloroisonicotinaldehyde hydrate 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 | C6H4ClNO H2O |
| Molecular Weight | 159.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloroisonicotinaldehyde Standards
Recommended Standards
- [4-(1,3-Dioxolan-2-yl)butyl]triphenylphosphonium (CAS 697733-23-6)
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- 2-(2,4-Dimethylphenyl)pyrrole (CAS 142425-96-5)
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- 3-Cyclopropyl-3-hydroxypentanoic acid (CAS 1519289-74-7)
- Sorafenib Impurity 10 (CAS 2004659-85-0)
- Insulin Glargine (CAS 160337-95-1)
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