478261-13-1 9L-309S [(3Z)-2-oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 2-chloroacetate CAS 478261-13-1
| CAS No. | 478261-13-1 |
| Molecular Formula | C16H11ClN2O3 |
| Molecular Weight | 314.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
478261-13-1 9L-309S [(3Z)-2-oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 2-chloroacetate (CAS 478261-13-1), molecular formula C16H11ClN2O3 and molecular weight 314.72 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 478261-13-1 9L-309S [(3Z)-2-oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 2-chloroacetate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 314.72 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 478261-13-1 9L-309S [(3Z)-2-oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino 2-chloroacetate 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 | C16H11ClN2O3 |
| Molecular Weight | 314.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
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