Chemical Name: o-Hydroxy Atorvastatin Calcium; 2-Hydroxy Atorvastatin Calcium; (3R,5R)-7-[3-(2-Hydroxyphenylcarbamoyl)-5-(4-fluorophenyl)-2-isopropyl-4-phenyl-1H-pyrrol-1-yl]-3,5-dihydroxyheptanoic Acid Calcium;(ßR,dR)-2-(4-Fluorophenyl)-ß,d-dihydroxy-4-[[(2-hydroxyphenyl)amino]carbonyl]-5-(1-methylethyl)-3-phenyl-1H-pyrrole-1-heptanoic Acid Calcium Salt (2:1); ortho-Hydroxy Atorvastatin Calcium Salt