2-hydroxy-5-(hydroxymethyl)benzoic acid CAS 7437-20-9
| CAS No. | 7437-20-9 |
| Molecular Formula | C8H8O4 |
| Molecular Weight | 168.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-hydroxy-5-(hydroxymethyl)benzoic acid (C8H8O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
2-hydroxy-5-(hydroxymethyl)benzoic acid (CAS 7437-20-9), molecular formula C8H8O4 and molecular weight 168.15 g/mol, is a CATO reference standard with documented purity and traceability.
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-hydroxy-5-(hydroxymethyl)benzoic 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 | C8H8O4 |
| Molecular Weight | 168.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
Related hydroxy Standards
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- 2-Hydroxy-4-(hydroxymethyl)benzoic acid (CAS 106420-93-3)
- 1-(5-Hydroxy-6-methoxypyridazin-4-yl)ethanone (CAS 106584-74-1)
- Methyl 4-Hydroxy-6-methylpyrimidine-2-carboxylate (CAS 1240600-77-4)
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- 4-Hydroxy-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-carboxylic acid (CAS 1516650-68-2)
Recommended Standards
- 2-Hydroxy-4-(perfluoroethyl)pyrimidine-5-carboxylic acid (CAS 306960-69-0)
- 2-Hydroxy-5,6-dimethylpyrimidine-4-carboxylic acid (CAS 941243-83-0)
- 2-Hydrazinyl-6-methyl-3-nitropyridine (CAS 21901-30-4)
- 2-Methoxy-3-methyl-5-nitropyridine (CAS 89694-10-0)
- 1,3-Dinitrobenzene (CAS 99-65-0)
- N,N'-(naphthalene-1,4-diyl)bis(naphthalene-2-sulfonamide) (CAS 301315-40-2)
- 4-(4-(4-(Trifluoromethyl)phenyl)thiazol-2-yl)benzenesulfonyl chloride (CAS 446883-84-7)
- 5-Bromo-2-(hydroxymethyl)pyridine (CAS 88139-91-7)
- Benidipine Impurity 73 (CAS CATO-C4X-112073)
- 4-((2-Hydroxyethyl)(methyl)amino)picolinic acid (CAS 1178081-92-9)
- 2-(Methylthio)phenol (CAS 1073-29-6)
- 5-[(4-benzylpiperazin-1-yl)sulfonyl]pyridine-2-thiol (CAS 852916-96-2)
- 6-(4-Bromophenyl)-4-(1-methyl-1H-indol-3-yl)-4,5-dihydropyridazin-3(2H)-one (CAS 946385-86-0)
- Glucagon receptor antagonist I (CAS 438618-32-7)
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