7-Hydroxyisobenzofuran-1(3H)-one CAS 3956-91-0
| CAS No. | 3956-91-0 |
| Molecular Formula | C8H6O3 |
| Molecular Weight | 150.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
7-Hydroxyisobenzofuran-1(3H)-one (CAS 3956-91-0) is a high-purity analytical reference standard with the molecular formula C8H6O3 and a molecular weight of 150.13 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 7-Hydroxyisobenzofuran-1(3H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 150.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures 7-Hydroxyisobenzofuran-1(3H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H6O3 |
| Molecular Weight | 150.13 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Hydroxyisobenzofuran Standards
- 4-Hydroxyisobenzofuran-1(3H)-one (CAS 13161-32-5)
- 5-Hydroxyisobenzofuran-1(3H)-one (CAS 55104-35-3)
- 5-Hydroxyisobenzofuran-1,3-dione (CAS 27550-59-0)
- 4-Ethyl-7-hydroxyisobenzofuran-1(3H)-one (CAS 62596-60-5)
- 4-Ethyl-7-hydroxyisobenzofuran-1,3-dione (CAS 62596-58-1)
- (E)-3-hydroxyisobenzofuran-1-carbaldehyde O-(4-chlorobenzyl) oxime (CAS 339023-46-0)
- (E)-3-hydroxyisobenzofuran-1-carbaldehyde O-(2,4-dichlorobenzyl) oxime (CAS 339022-55-8)
- (E)-3-hydroxyisobenzofuran-1-carbaldehyde O-(2,6-dichlorobenzyl) oxime (CAS 339023-47-1)
Recommended Standards
- 6-Methylbenzo[c][1,2,5]oxadiazol-5-ol (CAS 55730-22-8)
- 7-Methylbenzo[c][1,2,5]oxadiazole 1-oxide (CAS 3523-86-2)
- 6-Methyl-4H-furo[3,2-c]pyran-4-one (CAS 57053-19-7)
- Benzo[b][1,4]dioxin-2(3H)-one (CAS 4385-48-2)
- 2,4-Dichloro-6-iodopyrrolo[2,1-f][1,2,4]triazine (CAS 1313738-97-4)
- N4-(4-bromophenyl)-6-methylpyrimidine-2,4-diamine (CAS 6633-69-8)
- N-(2-Chloro-4-methylphenyl)-2-methoxybenzamide (CAS 852133-26-7)
- (E)-2-(2-(2,4-dinitrophenyl)hydrazono)-1,2-diphenylethan-1-ol (CAS 13804-47-2)
- 1-[(2-chloropyrimidin-4-yl)methyl]-1H-indazole (CAS 1997768-24-7)
- 2-(1H-Pyrazolo[5,1-c][1,2,4]triazol-3-yl)ethanamine (CAS 197355-88-7)
- Indapamide Impurity 30 (CAS 77083-53-5)
- 5-Methyl-1-propyl-1h-pyrazole-4-sulfonamide (CAS 1250681-34-5)
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- Semaglutide impurity 67 (CAS CATO-C4X-222667)
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 18665070610 / Nicole.chen@cato-chem.com