· HPLC (assay/purity, related substance, isomer), GC (residual solvent), PSD, general properties (LOD, residue on ignition, water, optical rotation, refractive index, relative density, alcohol content and so on)

· Analytical method development and validation/verification: assay/purity, related substance, isomer, residual solvent, PSD, water and so on.

· Stability test for API and formulation.

· Calibration of reference standard.