5,8-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one CAS 21875-91-2

Purity 97%+In StockPharmaceutical Standards
CAS No.21875-91-2
Molecular FormulaC11H12O2
Molecular Weight176.21 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5,8-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one CAS 21875-91-2 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5,8-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one.

5,8-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one (CAS 21875-91-2), molecular formula C11H12O2 and molecular weight 176.21 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C11H12O2, 5,8-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 176.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

CATO manufactures 5,8-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC11H12O2
Molecular Weight176.21 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963

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