5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((5-amino-5-carboxy-1-oxopentyl)amino)-3-(((3-(4-hydroxyphenyl)-2-methoxy-1-oxo-2-propenyl)oxy)methyl)-7-methoxy-8-oxo-, monosodium salt, (6R-(6-alpha,7-alpha,7(R*)))- 59751-35-8 810-B Antibiotic 810 B Cephamycin B sodium salt