Benzofuran-5-carboxylic Acid CAS 90721-27-0
| CAS No. | 90721-27-0 |
| Molecular Formula | C9H6O3 |
| Molecular Weight | 162.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Benzofuran-5-carboxylic Acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Benzofuran-5-carboxylic Acid (CAS 90721-27-0), molecular formula C9H6O3 and molecular weight 162.14 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H6O3, Benzofuran-5-carboxylic Acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 162.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Benzofuran-5-carboxylic Acid 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 | C9H6O3 |
| Molecular Weight | 162.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
Related Benzofuran Standards
- Benzofuran-3-carboxylic acid (CAS 26537-68-8)
- Benzofuran-7-carboxylic Acid (CAS 90484-22-3)
- Benzofuran-4-carboxylic Acid (CAS 166599-84-4)
- 2-(Benzofuran-5-Yl)Ethanol (CAS 1000548-28-6)
- (1R)-1-(1-benzofuran-3-yl)ethan-1-ol (CAS 1059698-12-2)
- (1r)-1-(1-Benzofuran-2-yl)ethan-1-ol (CAS 119678-66-9)
- 2-(Benzofuran-6-yl)ethanol (CAS 169785-09-5)
- 1-(Benzofuran-7-yl)ethanol (CAS 181819-95-4)
Recommended Standards
- 1,6-Anhydro-beta-D-galactose (CAS 644-76-8)
- 3-Hydroxy-3-methylpentanedioic acid (CAS 503-49-1)
- 3-Deoxyglucosone (CAS 4084-27-9)
- 7-Hydroxycoumarin (CAS 93-35-6)
- Boc-Phe(2-I)-OH (CAS 273221-78-6)
- (R)-2-(2,5-Difluorophenyl)pyrrolidine (CAS 1218935-59-1)
- (R)-4-Methyloxazolidin-2-one (CAS 4042-43-7)
- Gibberellin Acid (GA3)-d2 (CAS 120396-36-3)
- (8,3-c]pyran)-3,3'-diacetic acid, 3,3',4,4'-tetrahydro-9,9',10,10'-tetrahydroxy-7,7'-dimethoxy-1,1'-dioxo-, dimethyl ester 39277-41-3 NSC-159628 NSC159628 SC 28762 Spiro[2-cyclohexene-1, 7',7'a,8',11',11'a,12'-hexahydro-5',6',7'a,10',11'a,12'-hexahydroxy-3'-methoxy-2,6,6-trimethyl-7',8'-dioxo-, (2'.alpha.,7'a.beta.,11'a.beta.,12'.beta.)-(-)- VIRIDITOXIN (FORMERLY) Viridicatumtoxin Viriditoxin (CAS 39277-41-3)
- n-(3-Chlorophenyl)-2-(pyrimidin-2-ylthio)acetamide (CAS 329079-22-3)
- 2-Methyl-1-(pyridin-4-yl)propan-1-one (CAS 60148-10-9)
- 1-(1H-Indol-3-yl)pent-4-en-1-one (CAS 65083-46-7)
- 2-(2,3-Dihydro-benzo[1,4]dioxine-6-sulfonylamino)-4-methylsulfanyl-butyric acid (CAS 1396963-71-5)
- D-Trp25-Tirzepatide (CAS CATO-CPTD788909)
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