(S)-2-Chloro-8-methyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one CAS 2673370-66-4

Purity 97%+In StockPharmaceutical Standards
CAS No.2673370-66-4
Molecular FormulaC9H8ClNO2
Molecular Weight197.62 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(S)-2-Chloro-8-methyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one CAS 2673370-66-4 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

(S)-2-Chloro-8-methyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (CAS 2673370-66-4) is a high-purity analytical reference standard with the molecular formula C9H8ClNO2 and a molecular weight of 197.62 g/mol.

The molecular framework of (S)-2-Chloro-8-methyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (C9H8ClNO2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).

As a certified reference material (CRM), (S)-2-Chloro-8-methyl-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 FormulaC9H8ClNO2
Molecular Weight197.62 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay 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 AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2002
Halogen ContentCl-containing
Nitrogen Atoms1

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