Category
Atorvastatin
CAS Number
STD- 134523-00-5: IMP-A- 433289-84-0: IMP-B- 842103-12-2: IMP-F- 887196-24-9: IMP-G- 887324-53-0
Molecular Formula
STD- C33H35FN2O5: IMP-A- C33H36N2O5: IMP-B- C33H35FN2O5: IMP-F- C40H48FN3O8: IMP-G- C34H37FN2O5
Molecular Weight
STD- 558.64: IMP-A- 540.65: IMP-B- 558.7: IMP-F- 717.8: IMP-G- 572.7
Synonym

Atorvastatin ((3R,5R)-7-[2-(4-Fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-propan-2-ylpyrrol-1-yl]-3,5-dihydroxyheptanoic Acid)

Atorvastatin EP Impurity A ((3R,5R)-3,5-Dihydroxy-7-[5-(1-methylethyl)-2,3-diphenyl-4-(phenylcarbamoyl)-1H-pyrrol-1-yl]heptanoic Acid)

Atorvastatin EP Impurity B ((3RS,5SR)-7-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]-3,5-dihydroxyheptanoic acid)

Atorvastatin EP Impurity F ((3R,5R)-7-[(3R,5R)-7-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]-3,5-dihydroxyheptanamido]-3,5-dihydroxyheptanoic acid)

Atorvastatin EP Impurity G ((3R,5R)-7-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]-5-hydroxy-3-methoxyheptanoic acid)

Atorvastatin for peak identification A CRS

Atorvastatin for Peak Identification A CRS is a certified reference standard designed for accurate identification and quantification of atorvastatin-related impurities during chromatographic analysis. This standard is widely used in method development, method validation, system suitability testing, and impurity profiling in compliance with global regulatory requirements including ANDA, DMF, USP, EP, and BP.