1H，3H，4H，5H，6H-Cyclopenta[c]furan-1,3-dione CAS 3205-94-5

Purity 97%+In StockPharmaceutical Standards
CAS No.3205-94-5
Molecular FormulaC7H6O3
Molecular Weight138.12 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1H，3H，4H，5H，6H-Cyclopenta[c]furan-1,3-dione CAS 3205-94-5 chemical structure

Description

Structurally, 1H，3H，4H，5H，6H-Cyclopenta[c]furan-1,3-dione (C7H6O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 138.12 g/mol, it falls into the low-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

1H，3H，4H，5H，6H-Cyclopenta[c]furan-1,3-dione (CAS 3205-94-5), molecular formula C7H6O3 and molecular weight 138.12 g/mol, is a CATO reference standard with documented purity and traceability.

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 FormulaC7H6O3
Molecular Weight138.12 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

Recommended Standards

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