(3S,4S)-2,5-dioxotetrahydrofuran-3,4-diyl bis(4-methylbenzoate) CAS 156835-63-1

Purity 97%+In StockPharmaceutical Standards
CAS No.156835-63-1
Molecular FormulaC20H16O7
Molecular Weight368.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3S,4S)-2,5-dioxotetrahydrofuran-3,4-diyl bis(4-methylbenzoate) CAS 156835-63-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 368.34 g/mol gives (3S,4S)-2,5-dioxotetrahydrofuran-3,4-diyl bis(4-methylbenzoate) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(3S,4S)-2,5-dioxotetrahydrofuran-3,4-diyl bis(4-methylbenzoate) (CAS 156835-63-1), molecular formula C20H16O7 and molecular weight 368.34 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, (3S,4S)-2,5-dioxotetrahydrofuran-3,4-diyl bis(4-methylbenzoate) (C20H16O7) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 368.34 g/mol, it falls into the moderately-high-molecular-weight range. 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.

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 FormulaC20H16O7
Molecular Weight368.34 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2001

Recommended Standards

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