Albendazole EP Impurity H Catalogue No. - VL960026 CAS No. - N/A Molecular Formula - C15H19N3O3S Molecular Weight - 321.39 g/mol IUPAC Name - methyl (6-((2-methyl-4-oxopentan-2-yl)thio)-1H-benzo[d]imidazol-2-yl)carbamate