1) Cephalosporin 2) Mefoxin 
(from the article `cephalosporin`) The cephalosporins have been organized into groups based roughly on their activity. First-generation cephalosporins (e.g., cephalothin and cefalozin) ...
<chemical> A cephalosporin antibiotic. ... Pharmacological action: cephalosporins. ... Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-8-oxo-7-((2-thienylacetyl)amino)-, (6R-trans)- ... (12 Dec 1998) ... 
(sә-fal´o-thin) a semisynthetic first-generation cephalosporin, effective against a wide range of gram-positive and a limited range of gram-negative bacteria.
[n] - a semisynthetic analogue of cephalosporin
noun a semisynthetic analogue of cephalosporin