N-Carbobenzoxy-DL-selenomethionindiphenylmethylester

Benzhydryl 6β-Bromo-6α-<1-(E + Z-2,2-iodotrimethylsilylethenyl)> penicillanate S,S-dioxide

Benzyhydryl 6β-Bromo-6α-<1-(E + Z-2-iodoheptenyl)>penicillanate S,S-dioxide

(6R,7R)-8-Oxo-3-pentafluorophenyloxycarbonyloxymethyl-7-(2-thiophen-2-yl-acetylamino)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester

((3,4,4-trimethylcyclopent-2-en-1-ylidene)methylene)dibenzene