5-Formylfuran-2-carboxylic acid CAS 13529-17-4
| CAS No. | 13529-17-4 |
| Molecular Formula | C6H4O4 |
| Molecular Weight | 140.09 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.
5-Formylfuran-2-carboxylic acid (CAS 13529-17-4) is a high-purity analytical reference standard with the molecular formula C6H4O4 and a molecular weight of 140.09 g/mol.
5-Formylfuran-2-carboxylic acid (C6H4O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C6H4O4 |
| Molecular Weight | 140.09 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
Related Formylfuran Standards
- 2-Formylfuran-3-carboxylic acid (CAS 14757-79-0)
- 4-Formylfuran-2-carboxylic acid (CAS 1784641-78-6)
- (4-Formylfuran-3-yl)boronic acid (CAS 27339-36-2)
- 4-Formylfuran-2-boronic Acid (CAS 62306-78-9)
- 27339-38-4 3-Formylfuran-2-ylboronic acid BC000785 Furan-2-boronic acid-3-carbaldehyde (CAS 27339-38-4)
- 5-Formylfuran-2-carboxamide (CAS 42978-27-8)
- 3-formylfuran-2-carboxylic acid (CAS 29182-07-8)
- 5-formylfuran-3-carboxylic acid (CAS 603999-19-5)
Recommended Standards
- 3,5-Difluoroisonicotinonitrile (CAS 1214377-09-9)
- 2,5-Difluoronicotinonitrile (CAS 1214350-46-5)
- 4-Hydroxy-2-oxo-2H-pyran-6-carbaldehyde (CAS 147647-75-4)
- 5,6-Difluoronicotinonitrile (CAS 1214340-48-3)
- 3-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]propanoic acid (CAS 871497-70-0)
- Methyl 1-(2,4-dichlorobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxylate (CAS 242797-27-9)
- N-Allyloxycarbonyl-4-piperidone (CAS 306296-67-3)
- 3-(Furan-2-yl)pyrazine-2-carbaldehyde (CAS 1823498-75-4)
- (<I>R</I>)-(-)-3-Hydroxybutyric acid sodium salt (CAS 13613-65-5)
- 4-Bromo-7-methoxyisobenzofuran-1(3H)-one (CAS 130662-48-5)
- 3,4-Dimethyl-N-(pyridin-2-ylmethyl)aniline (CAS 332108-39-1)
- 4-(Methylamino)butanenitrile (CAS 31058-09-0)
- (2R,4S)-4-Amino-1-(tert-butoxycarbonyl)pyrrolidine-2-carboxylic acid (CAS 132622-78-7)
- Galanin Message Associated Peptide (44-59) amide (CAS 125455-59-6)
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