2-Hydroxy-3-(2-hydroxyethoxy)benzoic acid CAS 1038374-86-5
| CAS No. | 1038374-86-5 |
| Molecular Formula | C9H10O5 |
| Molecular Weight | 198.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Hydroxy-3-(2-hydroxyethoxy)benzoic acid (CAS 1038374-86-5), molecular formula C9H10O5 and molecular weight 198.17 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H10O5, 2-Hydroxy-3-(2-hydroxyethoxy)benzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H10O5 |
| Molecular Weight | 198.17 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.) | 1988 |
Related Hydroxy Standards
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- 2-Hydroxy-4-(2-hydroxyethoxy)benzoic acid (CAS 163451-82-9)
- 2-Hydroxy-3,5-dimethoxybenzoic acid (CAS 61637-60-3)
- 2-Hydroxy-4,6-dimethoxybenzoic acid, 97% (CAS 3187-19-7)
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