(2S,5R,6R)-6-Amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptan-2-carbonsaeure 1203-85-6 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-amino-3,3-dimethyl-7-oxo-, (2S,5R,6R)- 551-16-6 6-AMINOPENICILLANIC