Dihydro-2H-pyran-2,4(3H)-dione CAS 33532-46-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 33532-46-6 |
| Molecular Formula | C5H6O3 |
| Molecular Weight | 114.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Dihydro-2H-pyran-2,4(3H)-dione (CAS 33532-46-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H6O3. Molecular weight: 114.10 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H6O3 |
| Molecular Weight | 114.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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.) | 1966 |
Related Dihydro Standards
- Dihydro-2H-pyran-2,3(4H)-dione (CAS 154064-57-0)
- 4,5-Dihydro-1H-pyrazole-5-carboxylic acid (CAS 78367-79-0)
- 5,6-Dihydro-1,4-dioxine-2-carbaldehyde (CAS 59518-69-3)
- 1-Ethyl-1,4-dihydro-5H-tetrazol-5-one (CAS 69048-98-2)
- 5-Oxo-4,5-dihydro-1,3,4-oxadiazole-2-carbaldehyde (CAS 1357567-93-1)
- (3,6-dihydro-2H-pyran-4-yl)methanol (CAS 14774-34-6)
- (5,6-Dihydro-2h-pyran-3-yl)methanol (CAS 14774-35-7)
- (3,6-Dihydro-2H-pyran-2-yl)methanol (CAS 1504-04-7)
Recommended Standards
- Cimetidine Impurity 7 (CAS 24771-25-3)
- Fumaramide (CAS 627-64-5)
- 4-Oxopent-2-Enoic Acid (CAS 4743-82-2)
- 1-(3-(Hydroxymethyl)pyrrolidin-1-yl)-2-(1H-pyrazol-1-yl)ethan-1-one (CAS 1249887-30-6)
- Harman-d3 (CAS 1216708-84-7)
- 1-(3-Chloro-5-(pentafluoro-λ6-sulfanyl)phenyl)ethan-1-one (CAS 1180486-96-7)
- N,N,3-trimethylpyrrolidin-3-amine (CAS 947149-88-4)
- tert-Butyl 6,6-difluoro-2,8-diazaspiro[4.5]decane-2-carboxylate (CAS 1780426-38-1)
- 3-Cyano-4-hydroxybenzamide (CAS 1243392-11-1)
- Semaglutide Impurity 149 (CAS CATO-C4X-2226149)
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