(5R-(5alpha,6alpha(R*)))-6-(1-Hydroxyethyl)-7-oxo-4-thia-1-azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid 2-(2-Fluoroethylthio)-6-(1-hydroxyethyl)penem-3-carboxylate 2-Fthpc 4-Thia-1-azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 6-(1-hydroxyethyl)-7-oxo-, (5R-(5alpha,6alpha(R*)))- 6-(1-Hydroxyethyl)-7-oxo-4-thia-1-azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid (5R-(5alpha,6alpha(R*)))- 91685-69-7