| MC 301 | trans,trans-Muconaldehyde, 
    [2,5-14C]- | 
  
    | MC 302 | D-threo-Chloramphenicol,
    [dichloroacetyl-1,2-14C]- | 
  
    | MC 302E | D-threo-Chloramphenicol,
    [dichloroacetyl-1,2-14C]- | 
  
    | MC 302EH | D-threo-Chloramphenicol,
    [dichloroacetyl-1,2-14C]- | 
  
    | MC 302H | D-threo-Chloramphenicol, 
    [dichloroacetyl-1,2-14C]- | 
  
    | MC 303 | Adefovir, [adenine-8-14C]- | 
  
    | MC 303 | 9-(2-Phosphonylmethoxyethyl)-adenine, 
    [adenine-8-14C]- | 
  
    | MC 303 | PMEA, [adenine-8-14C]- | 
  
    | MC 304 | Palmitoyl Coenzyme A, 
    [palmitoyl-1-14C]- | 
  
    | MC 305 | Foscarnet sodium, [14C]- | 
  
    | MC 308 | Orotic acid, methyl ester, [2-14C]- | 
  
    | MC 311 | Guanosine 5'-diphosphate, [8-14C]- | 
  
    | MC 312 | Malonic acid, [2-14C]- | 
  
    | MC 313 | Orotic acid, [2-14C]- | 
  
    | MC 314 | Dihydrouracil, [2-14C]- | 
  
    | MC 315 | 5-Iodouracil, [2-14C]- | 
  
    | MC 319 | Butyric acid, sodium salt, [1-14C]- | 
  
    | MC 320 | D-Glucosamine 
    hydrochloride, [1-14C]- | 
  
    | MC 320W | D-Glucosamine 
    hydrochloride, [1-14C]- |