Diethyl 5-(hydroxymethyl)isophthalate CAS 181425-91-2
| CAS No. | 181425-91-2 |
| Molecular Formula | C13H22O5 |
| Molecular Weight | 258.31 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.
CATO supplies Diethyl 5-(hydroxymethyl)isophthalate (CAS 181425-91-2), a certified reference material (molecular formula C13H22O5, MW 258.31 g/mol) for analytical method development and quality control.
Diethyl 5-(hydroxymethyl)isophthalate (C13H22O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage. 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).
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 | C13H22O5 |
| Molecular Weight | 258.31 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2008 |
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Recommended Standards
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- 5-Chloro-6-fluoro-1H-pyrrolo[3,2-b]pyridine (CAS 2231673-18-8)
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