(2S)-3,4-Dihydro-2H-1-benzopyran-2-carbonyl Chloride CAS 130049-78-4

Purity 97%+In StockPharmaceutical Standards
CAS No.130049-78-4
Molecular FormulaC10H9ClO2
Molecular Weight196.63 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(2S)-3,4-Dihydro-2H-1-benzopyran-2-carbonyl Chloride CAS 130049-78-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 196.63 g/mol gives (2S)-3,4-Dihydro-2H-1-benzopyran-2-carbonyl Chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(2S)-3,4-Dihydro-2H-1-benzopyran-2-carbonyl Chloride (CAS 130049-78-4) is a high-purity analytical reference standard with the molecular formula C10H9ClO2 and a molecular weight of 196.63 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, (2S)-3,4-Dihydro-2H-1-benzopyran-2-carbonyl Chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 196.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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), (2S)-3,4-Dihydro-2H-1-benzopyran-2-carbonyl Chloride 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 FormulaC10H9ClO2
Molecular Weight196.63 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
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.)1994
Halogen ContentCl-containing

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