5-Hydroxytetrahydro-2H-pyran-2-one CAS 33691-73-5
| CAS No. | 33691-73-5 |
| Molecular Formula | C5H8O3 |
| Molecular Weight | 116.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-Hydroxytetrahydro-2H-pyran-2-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
5-Hydroxytetrahydro-2H-pyran-2-one (CAS 33691-73-5), molecular formula C5H8O3 and molecular weight 116.12 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H8O3, 5-Hydroxytetrahydro-2H-pyran-2-one contains a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 116.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.
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.
Physical & Chemical Properties
| 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.) | 1966 |
Related Hydroxytetrahydro Standards
- 3-Hydroxytetrahydro-2H-pyran-2-one (CAS 5058-01-5)
- 3-Hydroxytetrahydro-4H-pyran-4-one (CAS 72250-01-2)
- 4-Hydroxytetrahydro-2H-pyran-2-one (CAS 61892-56-6)
- 3-Hydroxytetrahydro-2H-pyran-4-carbonitrile (CAS 1780822-48-1)
- 3-Hydroxytetrahydro-2H-pyran-3-carbonitrile (CAS 209112-20-9)
- 4-Hydroxytetrahydro-2H-pyran-4-carbaldehyde (CAS 1383482-51-6)
- 3-Hydroxytetrahydro-2H-thiopyran 1-oxide (CAS 107319-08-4)
- 4-Hydroxytetrahydro-2H-thiopyran 1-oxide (CAS 89211-29-0)
Recommended Standards
- 5-Hydroxy-4-methyldihydrofuran-2(3H)-one (CAS 61892-47-5)
- 5-Methyl-1,3-dioxan-2-one (CAS 87831-99-0)
- 5-(Aminomethyl)isoxazolidin-3-one (CAS 72241-46-4)
- 5-Oxopentanoic acid (CAS 5746-02-1)
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- 5-Amino-2-ethoxypyridine, 97% (CAS 52025-34-0)
- 6-(((4-Chlorophenyl)thio)methyl)-N-(3-methoxybenzyl)-2-methylpyrimidin-4-amine (CAS 339278-87-4)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com