2-oxo-2,3-dihydro-1-benzofuran-7-carboxylic acid CAS 855221-95-3
| CAS No. | 855221-95-3 |
| Molecular Formula | C9H6O4 |
| Molecular Weight | 178.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 178.14 g/mol gives 2-oxo-2,3-dihydro-1-benzofuran-7-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-oxo-2,3-dihydro-1-benzofuran-7-carboxylic acid (CAS 855221-95-3) is a high-purity analytical reference standard with the molecular formula C9H6O4 and a molecular weight of 178.14 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2-oxo-2,3-dihydro-1-benzofuran-7-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 178.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), 2-oxo-2,3-dihydro-1-benzofuran-7-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.) | 1987 |
Related oxo Standards
- 2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-4-carboxylic acid (CAS 1190310-95-2)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-7-carboxylic acid (CAS 1190313-18-8)
- 4-Oxo-4,5-dihydro-1H-pyrrolo[3,2-c]pyridine-3-carboxylic acid (CAS 1190314-55-6)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-5-carboxylic acid (CAS 1190317-48-6)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-6-carboxylic acid (CAS 1190318-74-1)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-c]pyridine-7-carboxylic acid (CAS 1190318-92-3)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-c]pyridine-4-carboxylic acid (CAS 1190319-78-8)
- 5-Oxo-4,5-dihydro-1H-pyrrolo[3,2-b]pyridine-3-carboxylic acid (CAS 1190321-95-9)
Recommended Standards
- 2-Oxo-1,2-dihydropyrazolo[1,5-a]pyridine-3-carboxylic acid (CAS 2707036-92-6)
- 2-Oxo-2,3-dihydro-1H-benzimidazole-5-carboxylic Acid (CAS 23814-14-4)
- 2-Nitrobenzofuran-3-amine (CAS 71590-97-1)
- 2-Oxo-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine-7-carbaldehyde (CAS 615568-51-9)
- 2-(Azetidin-1-ylmethyl)-6-hydroxypyrimidin-4(3H)-one (CAS 1935850-92-2)
- (2,6-Difluoro-3-iodophenyl)methanol (CAS 1407118-01-7)
- 6-(Azetidin-1-yl)nicotinamide (CAS 1334490-88-8)
- 2-Hydroxy Fluorene-d9 (CAS 922510-18-7)
- L-Alanine, N-(2-chloroacetyl)- (CAS 691-80-5)
- 1-Benzyl-2,3-dihydro-1H-indene (CAS 4831-01-0)
- 4-Chloro-1-(2-methoxyethyl)-6-methylpyridin-2(1H)-one (CAS 1447963-18-9)
- (E)-(3-(4-Hydroxy-3-methoxyphenyl)acryloyl)glycine (CAS 1220-05-9)
- 1-(2,5-Difluorobenzoyl)piperazine (CAS 179334-11-3)
- CGMP Dependent Kinase Inhibitor Peptide (CAS 82801-73-8)
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