2-Cyclopentylidene-5-hydroxybenzofuran-3(2H)-one CAS 637751-04-3
| CAS No. | 637751-04-3 |
| Molecular Formula | C13H12O3 |
| Molecular Weight | 216.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
CATO supplies 2-Cyclopentylidene-5-hydroxybenzofuran-3(2H)-one (CAS 637751-04-3), a certified reference material (molecular formula C13H12O3, MW 216.23 g/mol) for analytical method development and quality control.
Structurally, 2-Cyclopentylidene-5-hydroxybenzofuran-3(2H)-one (C13H12O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 216.23 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Formula | C13H12O3 |
| Molecular Weight | 216.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
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- 4-Cyclopentylidene-3-phenylisoxazol-5(4H)-one (CAS 36771-30-9)
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- N-cyclopentylidene-2-methylpropane-2-sulfinamide (CAS 899440-18-7)
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Recommended Standards
- 2-Benzylbenzene-1,3,5-triol (CAS 754215-63-9)
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- 2-Hydroxy-2-(5-methylfuran-2-yl)-1-phenylethanone (CAS 613652-96-3)
- 2-(5-(Pyridin-3-yl)-1H-indol-3-yl)acetonitrile (CAS 1214355-71-1)
- 7-(Diethylamino)-3-nitro-2h-chromen-2-one (CAS 118116-71-5)
- Dehydrodiazinon (CAS 32588-20-8)
- 2,3,5,6-Tetramethoxyaporphine (CAS 5630-11-5)
- 5-Ethylbenzofuran-6-ol (CAS 858792-88-8)
- 1-(3-Methyl-5-vinylpyridin-2-yl)indoline (CAS 1355173-31-7)
- 1-(4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxy}phenyl)-3-[(2,6-dichlorophenyl)methyl]-2-methyl-1,4-dihydropyridin-4-one (CAS 339017-57-1)
- Butyl 5,8-dimethyl-4-morpholinoquinoline-2-carboxylate (CAS 887589-64-2)
- 1-Ethyl-1H-indole-5,6-diol (CAS 102236-74-8)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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