4-Methylene-5-oxo-4,5-dihydrofuran-3-carboxylic acid CAS 887569-76-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 887569-76-8 |
| Molecular Formula | C6H4O4 |
| Molecular Weight | 140.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Methylene-5-oxo-4,5-dihydrofuran-3-carboxylic acid (CAS 887569-76-8), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C6H4O4. Molecular weight: 140.09 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C6H4O4 |
| Molecular Weight | 140.09 g/mol |
| Purity | 97%+ |
| 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.) | 1987 |
Related Methylene Standards
- 2-Methylene-octanal (CAS 22414-64-8)
- (3-Methylene-1-azabicyclo[3.2.0]heptan-5-yl)methanol (CAS 2820536-95-4)
- 7-Methylene-2-oxaspiro[3.5]nonane (CAS 1256546-75-4)
- 3-Methylene-cyclopropane-1,2-dicarboxylic acid (CAS 45786-15-0)
- 8-Methyl-3-methylene-8-azabicyclo[3.2.1]octane (CAS 99838-33-2)
- 1-Methylene-1,2-dihydroisoquinoline (CAS 74477-04-6)
- 3-Methylene-2,3-dihydroisoquinoline (CAS 74488-22-5)
- 6-Methylene-1-propylcyclohex-1-ene (CAS 132591-73-2)
Recommended Standards
- 4,6-Dihydro-1H,3H-furo[3,4-c]furan-1,3-dione (CAS 2848675-00-1)
- Comanic Acid (CAS 499-05-8)
- 2-Oxo-2H-pyran-6-carboxylic acid (CAS 672-67-3)
- 3-((2-Chloro-6-fluorobenzyl)oxy)benzaldehyde (CAS 336879-99-3)
- 2,5-Dichloro-3-(difluoromethoxy)benzodifluoride (CAS 1807058-69-0)
- 2-(2,4-Dimethyl-phenylamino)-N-(4-methyl-thiazol-2-yl)-propionamide (CAS 1008918-60-2)
- 3-Methyl-6-(4-methyl-3-nitrophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-8-amine (CAS 1956334-72-7)
- N-(2,6-Dioxopiperidin-3-yl)-2-phenylacetamide (CAS 77658-84-5)
- 2,5-Dimethylfuran-3-sulfonyl chloride (CAS 166964-26-7)
- Semaglutide Impurity 146 (CAS 2645421-68-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com