rel-(7R,8S)-2-Chloro-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one CAS 2673369-57-6
| CAS No. | 2673369-57-6 |
| Molecular Formula | C10H10ClNO2 |
| Molecular Weight | 211.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 211.64 g/mol gives rel-(7R,8S)-2-Chloro-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
rel-(7R,8S)-2-Chloro-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (CAS 2673369-57-6), molecular formula C10H10ClNO2 and molecular weight 211.64 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, rel-(7R,8S)-2-Chloro-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (C10H10ClNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 211.64 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), rel-(7R,8S)-2-Chloro-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one 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 | C10H10ClNO2 |
| Molecular Weight | 211.64 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- N-(4-chlorophenyl)-2-methyloxirane-2-carboxamide (CAS 65925-79-3)
- rel-(7S,8S)-2-Chloro-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (CAS 2673369-56-5)
- N-(4-acetylphenyl)-2-chloroacetamide (CAS 38283-38-4)
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