7-Hydroxybenzofuran-2-carboxylic acid CAS 4790-80-1
| CAS No. | 4790-80-1 |
| Molecular Formula | C9H6O4 |
| Molecular Weight | 178.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Hydroxybenzofuran-2-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.
CATO supplies 7-Hydroxybenzofuran-2-carboxylic acid (CAS 4790-80-1), a certified reference material (molecular formula C9H6O4, MW 178.14 g/mol) for analytical method development and quality control.
Structurally, 7-Hydroxybenzofuran-2-carboxylic acid (C9H6O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 178.14 g/mol, it falls into the medium-molecular-weight range. 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), 7-Hydroxybenzofuran-2-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 | C9H6O4 |
| Molecular Weight | 178.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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.) | 1958 |
Related Hydroxybenzofuran Standards
- 4-Hydroxybenzofuran-2-carboxylic acid (CAS 113511-42-5)
- 6-Hydroxybenzofuran-3-carboxylic acid (CAS 115693-71-5)
- 5-Hydroxybenzofuran-2-carboxylic Acid (CAS 56172-36-2)
- 6-Hydroxybenzofuran-2-carboxylic Acid (CAS 334022-87-6)
- 1-(5-Hydroxybenzofuran-3-yl)ethan-1-one (CAS 17249-68-2)
- 1-(3-Hydroxybenzofuran-2-yl)ethanone (CAS 5556-33-2)
- 1-(4-Hydroxybenzofuran-2-yl)ethanone (CAS 23295-57-0)
- 1-(4-Hydroxybenzofuran-5-yl)ethanone (CAS 69722-46-9)
Recommended Standards
- 7-Hydroxy-1H-indazole-6-carboxylic acid (CAS 907190-32-3)
- 7-Hydroxyquinazoline-2,4(1H,3H)-dione (CAS 861546-03-4)
- 6-Nitroindolin-2-one (CAS 474799-41-2)
- 7-Nitroindolin-2-one (CAS 25369-31-7)
- Ondansetron-d5 (CAS 1219798-86-3)
- Methyl (R)-4-(ethylsulfonyl)piperazine-2-carboxylate (CAS 2306248-66-6)
- 4-(4-Fluorobenzoyl)-N-(thiophen-2-ylmethyl)-1H-pyrrole-2-carboxamide (CAS 478078-63-6)
- 2-(6-fluoro-2-methyl-1H-indol-3-yl)ethan-1-amine hydrochloride (CAS 2059938-39-3)
- H-Ala-pNA · HCl (CAS 31796-55-1)
- 4-Fluoro-n-(prop-2-en-1-yl)benzene-1-sulfonamide (CAS 66898-23-5)
- 4-iodobenzyl bromide (CAS 16004-15-2)
- 3-Morpholino-1-(4-nitrophenyl)-1H-pyrazol-5(4H)-one (CAS 30707-79-0)
- Heptadecanoic Acid N-Hydroxysuccinimide Ester (CAS 201472-73-3)
- Galanin Message Associated Peptide (44-59) amide (CAS 125455-59-6)
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