Tolvaptan CAS No.: 150683-30-0 Appearance White powder Assay(By HPLC) 99%min Loss on drying 1%max Single impurity  0.5%max Tolvaptan intermediates: 5-Chloro-2-nitro benzoic acid CAS NO.: 2516-95-2 7-Chloro-1,2,3,4-tetrahydrobenzo[b]azepin-5-one CAS No.: 160129-45-3 2-Methyl-4-(2-methylbenzoylamino)benzoic acid CAS No.:317374-08-6