title: Spectroscopic analysis of polymers of benzylpenicillin and ampicillin.
mesh_terms: D000667:Ampicillin / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D010400:Penicillin G / Q000032:analysis*; D011108:Polymers / Q000032:analysis*; D013055:Spectrophotometry, Infrared; D013057:Spectrum Analysis
chemical_list: D011108:Polymers; D000667:Ampicillin; D010400:Penicillin G