- 
 6,6-difluoro-3-azabicyclo[3.1.0]hexane hydrochloride 
- 
 4-(trifluoromethyl)pyrrolidin-2-one 
- 
 3-oxocyclopentane-1-carboxylic acid 
- 
 3,3-difluoropyrrolidine hydrochloride 
- 
 3,3-difluorocyclopentane-1-carboxylic acid 
- 
 3-(trifluoromethyl)pyrrolidine hydrochloride 
- 
 1-fluorocyclopentane-1-carboxylic acid 1-氟环戊烷羧酸 
- 
 1-benzyl-2,5-dihydro-1H-pyrrole 
- 
 1-aminocyclopentane-1-carboxylic acid 
- 
 1,1-difluoro-5-azaspiro[2.4]heptane hydrochloride 
 
  
  
  
 