5-Chloro-3-methylfuran-2(5H)-one CAS 66510-25-6
| CAS No. | 66510-25-6 |
| Molecular Formula | C5H5ClO2 |
| Molecular Weight | 132.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-3-methylfuran-2(5H)-one (C5H5ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 5-Chloro-3-methylfuran-2(5H)-one (CAS 66510-25-6), a certified reference material (molecular formula C5H5ClO2, MW 132.55 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Chloro-3-methylfuran-2(5H)-one 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 Formula | C5H5ClO2 |
| Molecular Weight | 132.55 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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- 5-Chloro-3-ethyl-1,2,4-oxadiazole (CAS 1250086-72-6)
- 3-Chloro-5-ethyl-1,2,4-oxadiazole (CAS 1256643-47-6)
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Recommended Standards
- 5-(Chloromethyl)-2-methyl-2H-tetrazole (CAS 55408-14-5)
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- But-2-yn-1-yl carbonochloridate (CAS 202591-85-3)
- 4-Butyryl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 22616-35-9)
- 2-[2-(1,3-dioxaindan-5-yl)-1,3-thiazol-4-yl]acetic acid (CAS 1097005-91-8)
- 3-(Dimethylsulfamoyl)-4-methoxybenzoic acid (CAS 786728-89-0)
- 2-(4-Methyl-1H-pyrazol-3-yl)-1-morpholinoethanethione (CAS 806637-95-6)
- 2-(1-(4-Chlorobenzyl)-5-methyl-2-phenyl-1H-indol-3-yl)acetic acid (CAS 146-82-7)
- 2-(2,4-Dinitrophenyl)-N,N-dimethylethen-1-amine (CAS 1214-75-1)
- 1-Ethyl-4-((1-methyl-1H-pyrazol-4-yl)ethynyl)-1H-pyrazol-5-amine (CAS 1707374-47-7)
- N-Allyl-N-(3-piperidinylmethyl)-2-propen-1-aminedihydrochloride (CAS 1220034-31-0)
- 1-(Methylsulfonyl)pyrrolidin-3-one (CAS 1270026-80-6)
- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
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