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Separation and characterization of degradation/interaction products of codeine phosphate in ibuprofen arginate/codeine phosphate combination formulation by HPLC coupled with MS analysis
Soumia Cheddah, Taijun Hang
Journal of Chinese Pharmaceutical Sciences . 2014, (10): 694 -710 .  DOI: 10.5246/jcps.2014.10.089