STP For levosalbutamol 0.25mg, Ambroxol 7.5mg & Guaiphensin 12.5 mg
Assay: Each ml contains: Levosalbutamol Sulphate IP eq. to levosalbutamol 0.25 mg, Ambroxol IP 7.5 mg & Guaiphensin IP 12.5 mg Mobile phase preparation:[600 ml HPLC water+400ml Acetonitrile+1ml Triethylamine pH 4.0 Flow rate: 1.0ml/min UV-Detector:…