Category:
Regulated Fine Chemicals
CAS NO:
131944-48-4
Standard:
BP,EP,ChP,USP,
(E/Z)-FK-506 26,28-Allylic Ester Rearrangement Impurity is a critical process-related impurity generated during the synthesis of Tacrolimus. It arises from allylic rearrangement at the C26/C28 positions. Molecular formula: C44H73NO10; CAS: Not publicly assigned.
Strictly store under inert atmosphere at -20°C. Handle with PPE to avoid dermal exposure. Do not use in clinical formulations; solely for analytical research.