(3AR,5S,5aR,8aS,8bR)-2,2,7,7-tetramethyl-5-(tosylmethyl)tetrahydro-5H-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran CAS 70932-39-7
| CAS No. | 70932-39-7 |
| Molecular Formula | C19H26O8S |
| Molecular Weight | 414.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(3AR,5S,5aR,8aS,8bR)-2,2,7,7-tetramethyl-5-(tosylmethyl)tetrahydro-5H-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran (CAS 70932-39-7) is a high-purity analytical reference standard with the molecular formula C19H26O8S and a molecular weight of 414.47 g/mol.
(3AR,5S,5aR,8aS,8bR)-2,2,7,7-tetramethyl-5-(tosylmethyl)tetrahydro-5H-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran (C19H26O8S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H26O8S |
| Molecular Weight | 414.47 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Sulfur Atoms | 1 |
Recommended Standards
- (3AR,5R,6S,6aR)-5-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl 4-methylbenzenesulfonate (CAS 3253-75-6)
- 2,3:4,5-Di-O-isopropylidene-1-O-p-toluenesulfonyl-β-D-fructopyranose (CAS 78574-35-3)
- (2S,5R)-tert-Butyl 2-carbamoyl-5-(4-((2-fluorobenzyl)oxy)phenyl)pyrrolidine-1-carboxylate (CAS 934240-45-6)
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