title: The assay of potassium 6-(L-(+)- -phenoxypropionamido)penicillanate and 6-(D-(+)- -phenoxypropionamido)penicillanate in phenethicillin potassium by circular dichroism spectrometry.
mesh_terms: D000577:Amides / Q000032:analysis; D002942:Circular Dichroism; D004339:Drug Compounding; D008722:Methods; D009904:Optical Rotation; D009905:Optical Rotatory Dispersion; D010397:Penicillanic Acid / Q000032:analysis; D010404:Penicillin V / Q000031:analogs & derivatives* / Q000032:analysis*; D010636:Phenols / Q000032:analysis; D011422:Propionates / Q000032:analysis; D013057:Spectrum Analysis; D013237:Stereoisomerism; D014466:Ultraviolet Rays
chemical_list: D000577:Amides; D010636:Phenols; D011422:Propionates; D010397:Penicillanic Acid; D010404:Penicillin V