30004
Specifically , rIALP - catalyzed cleavage of five prodrugs ( fosphenytoin , clindamycin phosphate , dexamethasone phosphate , ritonavir phosphate and ritonavir oxymethyl phosphate ) was tested in vitro and parent exposure was assessed in vivo ( rat only ) following an oral dose of each prodrug .
 fosphenytoin, clindamycin phosphate, dexamethasone phosphate, ritonavir phosphate, ritonavir oxymethyl phosphate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 fosphenytoin, clindamycin phosphate, dexamethasone phosphate, ritonavir phosphate, ritonavir oxymethyl phosphate