(2R,3R,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-4,4-difluoro-2-(hydroxymethyl)tetrahydrofuran-3-yl tert-butyl carbonate
CAS: 250698-51-2
Category: Pharmaceutical Intermediates
| Purity | ≥98.0% (HPLC), ≥99.0% (HPLC) |
| Molecular Formula | C14H21F2N3O6 |
| Molecular Weight | 365.33 |
| Appearance | White to off-white crystalline powder |
| Packaging | 1 g, 5 g, 10 g, 25 g, 100 g, 500 g, or 1 kg fluorinated HDPE bottle or aluminum foil bag with moisture barrier |
| Testing Indicators | Appearance — Visual inspection; Identification — HPLC retention time, LC-MS, FTIR, 1H NMR, 13C NMR and 19F NMR; Assay/Purity — HPLC (UV); Related substances — HPLC; Water content — Karl Fischer titration (USP <921>); Residual solvents — GC (USP <467>); Specific optical rotation — Polarimetry (USP); Melting range — Capillary melting point method; Heavy metals — ICP-MS or ICP-OES; Residue on ignition — USP <281>. |
| Storage Notes | Store tightly sealed in a cool, dry place at 2–8°C, protected from moisture and light. For long-term storage, keep under an inert atmosphere (nitrogen or argon). Avoid repeated freeze-thaw cycles and prolonged exposure to elevated temperature. |
| Lead Time | 10 days |
A fluorinated protected nucleoside intermediate primarily used in the synthesis of Gemcitabine (2',2'-difluorodeoxycytidine), antiviral nucleoside analogs, and other fluorinated pharmaceutical compounds. Suitable for medicinal chemistry, process development, and commercial API manufacturing.