title: Studies related to penicillins. V. The conversion of 6 -phthalimidopenicillanic acid into cepham derivatives.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D007094:Imides; D010397:Penicillanic Acid; D010406:Penicillins; D010795:Phthalic Acids; D013053:Spectrophotometry; D013844:Thiazoles
chemical_list: D007094:Imides; D010406:Penicillins; D010795:Phthalic Acids; D013844:Thiazoles; D010397:Penicillanic Acid