Rosuvastatin EP Impurity A (Calcium salt)

Chemical Name: (3R,5S,6E)-7-[2-(2,N-dimethyl-2-hydroxypropane-1-sulfonamido)-4-(4-fluorophenyl)-6-(propan-2-yl)pyrimidin-5-yl]-3,5-dihydroxyhept-6-enoic acid calcium salt (as per EP) Calcium (3R,5S,E)-7-{4-(4-fluorophenyl)-2-[(2-hydroxy-N,2-dimethylpropyl)sulfonamide]-6-isopropylpyrimidin-5-yl}-3,5-dihydroxyhept-6-enoate salt (as per USP)

Synonym: Rosuvastatin USP Related Compound A

Smile: O=C([O-])C[C@H](O)C[C@H](O)/C=C/C1=C(C(C)C)N=C(N(C)S(=O)(CC(O)(C)C)=O)N=C1C2=CC=C(F)C=C2.[Ca+]