Nadolol

Phenylbutazone impurity B - (4-butyl-4-hydroxy-1,2-diphenyl-3,5)pyrazolidinedione

Mebendazole for system suitability

Metoprolol impurity A - (2RS)-1-(ethylamino)-3-[4-(2-methoxyethyl)phenoxy]propan-2-ol

Ioxaglic acid impurity A - 3-amino-5-[(2-hydroxyethyl)carbamoyl]-2,4,6-triiodobenzoic acid

Malic acid - Reference Spectrum

Ibuprofen impurity F - 3-[4-(2-methylpropyl)phenyl]propanoic acid

Ioxaglic acid

Flubendazole

Flubendazole for system suitability