5-Hydroxybenzofuran-2-carboxylic Acid CAS 56172-36-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 56172-36-2 |
| Molecular Formula | C9H6O4 |
| Molecular Weight | 178.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Hydroxybenzofuran-2-carboxylic Acid (CAS 56172-36-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H6O4. Molecular weight: 178.14 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
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.) | 1973 |
Related Hydroxybenzofuran Standards
- 4-Hydroxybenzofuran-2-carboxylic acid (CAS 113511-42-5)
- 6-Hydroxybenzofuran-3-carboxylic acid (CAS 115693-71-5)
- 6-Hydroxybenzofuran-2-carboxylic Acid (CAS 334022-87-6)
- 7-Hydroxybenzofuran-2-carboxylic acid (CAS 4790-80-1)
- 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
- 5-Hydroxy-2,3-dihydrophthalazine-1,4-dione (CAS 7600-08-0)
- 5-Methoxy-2-nitrobenzonitrile (CAS 38469-84-0)
- 5-Hydroxy-1H-indazole-6-carboxylic acid (CAS 36174-09-1)
- n-(2-Methoxy-5-sulfamoylphenyl)isobutyramide (CAS 1223025-45-3)
- 3',5-Dimethoxy-[1,1'-biphenyl]-3-carboxylic acid (CAS 1261970-38-0)
- 5-Ethylsulfadiazine (CAS 3271-01-0)
- 4-(3-Chlorophenyl)-5-(methylsulfonyl)thiazol-2-amine (CAS 1710834-24-4)
- 3-ethyl-1-(4-methyl-3-nitrophenyl)urea (CAS 1600601-53-3)
- Methyl 6-(Bromomethyl)-2-naphthoate (CAS 56358-60-2)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
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