2-Carbamoyloxyethylthio-6-(1-hydroxyethyl)penem-3-carboxylic acid 4-Thia-1-azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 3-((2-((aminocarbonyl)oxy)ethyl)thio)-6-(1-hydroxyethyl)-7-oxo-, monosodium salt, (5R-(5alpha,6alpha))- 95415-91-1 Sch 34343 Sch-34343