Synonyms: 3,3-dimethyl-7-oxo-6-(2-phenyl-acetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, monosodium salt; american penicillin; nalpen g; penicillin-g, monosodium salt; penilaryn; Picibanil; benzylpenicillin sodium; sodium benzylpenicillinate; sodium benzylpenicillin g; Benzyl penicillinic acid sodium salt; sodium penicillin; penicillin g, sodium salt; sodium penicillin ii; veticillin; 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,3,3-dimethyl-7-oxo-6-(2-phenylacetamido)-,monosodiumsalt; 5alpha,6beta)]-nylacetyl)amino]-[2s-(2alphmonosodiumsalt; americanpenicillin; benzylpenicillinicacidsodiumsalt; crystapen; mycofarm; novocillin; pen-a-brasive