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Pravastatin Impurity 1 Upacicalcet Impurity 30 Pravastatin Impurity 7（Pravastatin EP Impurity G） Pravastatin Dihydronaphthalene Acid Impurity Sodium Salt sodium:(3R,5R)-3,5-dihydroxy-7-[(1S,2S)-6-hydroxy-2-methyl-1,2-dihydronaphthalen-1-yl]heptanoate (R,dR,1S,2S)-1,2-Dihydro-,d,6-trihydroxy-2-methyl-1-naphthaleneheptanoic Acid Sodium Salt(Pravast Sodium (3R,5R)-3,5-dihydroxy-7-[(1S,2S)-6-hydroxy-2-methyl- 1,2-dihydronaphthalen-1-yl]heptanoic acid