4-(3-Hydroxybenzofuran-2-yl)-2-oxobut-3-enoic acid CAS 139232-38-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 139232-38-5 |
| Molecular Formula | C12H8O5 |
| Molecular Weight | 232.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(3-Hydroxybenzofuran-2-yl)-2-oxobut-3-enoic acid (CAS 139232-38-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C12H8O5. Molecular weight: 232.19 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C12H8O5 |
| Molecular Weight | 232.19 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
Related Hydroxybenzofuran Standards
- (5-Hydroxybenzofuran-3-yl)(pyridin-4-yl)methanone (CAS 1427023-86-6)
- (5-Hydroxybenzofuran-3-yl)(5-methylfuran-2-yl)methanone (CAS 328009-37-6)
- 4-(5-Hydroxybenzofuran-2-yl)benzene-1,2-diol (CAS 403520-31-0)
- 4-(6-Hydroxybenzofuran-2-yl)benzene-1,3-diol (CAS 67736-22-5)
- (5-Hydroxybenzofuran-3-yl)(thiophen-2-yl)methanone (CAS 329209-30-5)
- Ethyl 5-hydroxybenzofuran-3-carboxylate (CAS 114195-14-1)
- Ethyl 4-hydroxybenzofuran-2-carboxylate (CAS 127724-14-5)
- Methyl 2-(7-Hydroxybenzofuran-3-yl)acetate (CAS 181052-63-1)
Recommended Standards
- 1-(4-Carboxyphenyl)-1H-pyrazole-4-carboxylic acid (CAS 1367928-29-7)
- 6-Methylquinoxaline-2,3-dicarboxylic acid (CAS 143663-15-4)
- 4,5-diethyl 2-oxo-1,3-dioxolane-4,5-dicarboxylate (CAS 1358802-65-9)
- 4-(Octyloxy)benzene-1-carboximidamide hydrochloride (CAS 29277-10-9)
- 8-Chloro-6-(trifluoromethyl)imidazo[1,2-a]pyridine-2-carboxylic Acid (CAS 353258-35-2)
- 4-Bromo-1-cyclopropyl-2-fluorobenzene (CAS 1353855-10-3)
- 1-Isopropyl-2-phenyldiazene (CAS 1075-73-6)
- (1R,3S,4S)-tert-butyl 3-((2-amino-4-bromophenyl)carbamoyl)-2-azabicyclo[2.2.1]heptane-2-carboxylate (CAS 1256387-73-1)
- Abemaciclib Impurity 171 (CAS CATO-C4X-2937171)
- [y-Glu3]-Semaglutide Impurity 135 (CAS CATO-C4X-2226135)
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