6-Chloro-3-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine CAS 56346-38-4
| CAS No. | 56346-38-4 |
| Molecular Formula | C9H10ClNO |
| Molecular Weight | 183.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 6-Chloro-3-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 56346-38-4), a certified reference material (molecular formula C9H10ClNO, MW 183.63 g/mol) for analytical method development and quality control.
6-Chloro-3-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine (C9H10ClNO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H10ClNO |
| Molecular Weight | 183.63 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
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Recommended Standards
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- (3E)-3-[2-(4-Fluorophenyl)hydrazin-1-ylidene]-1-(propan-2-yl)-2,3-dihydro-1H-indol-2-one (CAS 320422-07-9)
- Methyl 4-acetamido-5-chloro-2-(prop-2-yn-1-yloxy)benzoate (CAS 89481-87-8)
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