147-48-8 87-08-1 Calcium (2S-cis(2alpha,5alpha,6beta))-bis(3,3-dimethyl-7-oxo-6-((phenoxyacetyl)amino)-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate) EINECS 205-689-3 Phenoxymethylpenicillinum calcium