O6-Benzyl-8-bromo-N9-[3’,5’-O-(1,1,3,3-tetrakis(isopropyl)-1,3-disiloxanediyl)-b-D-2’-deoxyribofuranosyl]guanine CAS 328394-26-9
| CAS No. | 328394-26-9 |
| Molecular Formula | C29H44BrN5O5Si2 |
| Molecular Weight | 678.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of O6-Benzyl-8-bromo-N9-[3’,5’-O-(1,1,3,3-tetrakis(isopropyl)-1,3-disiloxanediyl)-b-D-2’-deoxyribofuranosyl]guanine is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
O6-Benzyl-8-bromo-N9-[3’,5’-O-(1,1,3,3-tetrakis(isopropyl)-1,3-disiloxanediyl)-b-D-2’-deoxyribofuranosyl]guanine (CAS 328394-26-9), molecular formula C29H44BrN5O5Si2 and molecular weight 678.77 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, O6-Benzyl-8-bromo-N9-[3’,5’-O-(1,1,3,3-tetrakis(isopropyl)-1,3-disiloxanediyl)-b-D-2’-deoxyribofuranosyl]guanine (C29H44BrN5O5Si2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 678.77 g/mol, it falls into the high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C29H44BrN5O5Si2 |
| Molecular Weight | 678.77 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 5 |
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