SynonymsChangchuanmycin; Immunomycin; FK 520; FR 520; FR 900520; L 683590; Tacrolimus Related Compound A Close Changchuanmycin; Immunomycin; FK 520; FR 520; FR 900520; L 683590; Tacrolimus Related Compound A Related products Ascomycin (Tacrolimus Related Compound A) M.F. M.W. 792.02 CAT# AR-A02613 CAS# 104987-12-4 19-epi-Ascomycin M.F. M.W. 792.03 CAT# AR-A02614 CAS# N/A Ascomycin Impurity 1 M.F. M.W. 774.01 CAT# AR-A02615 CAS# 148147-41-5