| CAS No. | 55074-90-3 |
| Molecular Formula | C5H8O3 |
| Molecular Weight | 116.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 2-Hydroxydihydro-2H-pyran-3(4H)-one is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 116.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
2-Hydroxydihydro-2H-pyran-3(4H)-one (CAS 55074-90-3) is a high-purity analytical reference standard with the molecular formula C5H8O3 and a molecular weight of 116.12 g/mol.
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.
As a certified reference material (CRM), 2-Hydroxydihydro-2H-pyran-3(4H)-one 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.
| Molecular Formula | C5H8O3 |
| Molecular Weight | 116.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1972 |