(3AR,5R,6R,7S,7aR)-5-(hydroxymethyl)-2-methoxy-2-methyltetrahydro-5H-[1,3]dioxolo[4,5-b]pyran-6,7-diol CAS 138196-19-7
| CAS No. | 138196-19-7 |
| Molecular Formula | C9H16O7 |
| Molecular Weight | 236.22 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.
(3AR,5R,6R,7S,7aR)-5-(hydroxymethyl)-2-methoxy-2-methyltetrahydro-5H-[1,3]dioxolo[4,5-b]pyran-6,7-diol (CAS 138196-19-7), molecular formula C9H16O7 and molecular weight 236.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H16O7, (3AR,5R,6R,7S,7aR)-5-(hydroxymethyl)-2-methoxy-2-methyltetrahydro-5H-[1,3]dioxolo[4,5-b]pyran-6,7-diol 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 236.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.
As a certified reference material (CRM), (3AR,5R,6R,7S,7aR)-5-(hydroxymethyl)-2-methoxy-2-methyltetrahydro-5H-[1,3]dioxolo[4,5-b]pyran-6,7-diol 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.
Physical & Chemical Properties
| Molecular Formula | C9H16O7 |
| Molecular Weight | 236.22 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1996 |
Recommended Standards
- 4-Nitro-3-(pyrrolidin-1-yl)benzoic acid (CAS 1380099-54-6)
- 138716-60-6 2-[(2,4-difluorophenyl)-oxomethyl]-3-(dimethylamino)-2-propenenitrile 2-[2,4-bis(fluoranyl)phenyl]carbonyl-3-(dimethylamino)prop-2-enenitrile A807425 (CAS 138716-60-6)
- Dimethyl 2-(2-phenylhydrazono)malonate (CAS 13732-26-8)
- Methyl 4-acetamido-6-acetylpicolinate (CAS 1393530-30-7)
- ethyl 7-oxo-4H-thieno[3,2-b]pyridine-6-carboxylate (CAS 69626-98-8)
- 4-Fluoro-2-sulfamoylbenzoic acid (CAS 1379305-97-1)
- 4-(tert-Butyl)phenyl 3-(furan-2-yl)acrylate (CAS 853349-57-2)
- 6-Chloro-2-(2,3-dichlorophenyl)oxazolo[5,4-b]pyridine (CAS 1354749-70-4)
- 2-[(furan-2-ylmethyl)sulfanyl]acetonitrile (CAS 86251-29-8)
- 1-Bromo-4-(2,5-dimethylpyrrol-1-yl)piperidine (CAS 1934562-98-7)
- (2E)-N-Methoxy-N-methyl-3-(3,4,5-trimethoxyphenyl)prop-2-enamide (CAS 92502-26-6)
- 5-(2-Chloroacetyl)thiophene-3-carboxamide (CAS 1197469-93-4)
- N-(5-Amino-2-methylphenyl)-3-methoxybenzamide (CAS 926218-38-4)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com