3-Chloro-2,4(3H,5H)-furandione CAS 4971-55-5
| CAS No. | 4971-55-5 |
| Molecular Formula | C4H3ClO3 |
| Molecular Weight | 134.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-Chloro-2,4(3H,5H)-furandione (C4H3ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 134.52 g/mol, it falls into the low-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
3-Chloro-2,4(3H,5H)-furandione (CAS 4971-55-5), molecular formula C4H3ClO3 and molecular weight 134.52 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 3-Chloro-2,4(3H,5H)-furandione 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 Formula | C4H3ClO3 |
| Molecular Weight | 134.52 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- 1-(2-Bromo-6-(difluoromethyl)phenyl)propan-1-one (CAS 1261580-39-5)
- 2-Chloro-4-(chloromethyl)-3-methylpyridine (CAS 1211588-98-5)
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- 5-(p-Tolyldiazenyl)quinolin-8-ol (CAS 32903-07-4)
- 3-(4-Methoxyphenyl)isothiazole-4-carboxylic acid (CAS 1239771-66-4)
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
Why CATO?
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