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Table 5 Effect of standardization on the ambiguity of non-systematic identifiers (in  %) across databases

From: Ambiguity of non-systematic chemical identifiers within and between small-molecule databases

Database Standardization ChEBI ChEMBL ChemSpider ChemSpider-V DrugBank HMDB NPC PubChem
ChEMBL FICTS 39.5        
uICTS 22.0        
FICTu 32.6        
ChemSpider FICTS 30.9 29.9       
uICTS 28.4 25.0       
FICTu 19.5 17.8       
ChemSpider-V FICTS 39.9 43.6       
uICTS 36.5 34.1       
FICTu 26.1 27.3       
DrugBank FICTS 28.7 39.6 50.7 45.2     
uICTS 15.5 22.6 41.4 37.2     
FICTu 23.3 32.6 35.9 33.4     
HMDB FICTS 49.6 48.4 57.3 43.9 30.7    
uICTS 47.4 36.1 54.4 42.4 30.4    
FICTu 32.3 33.0 34.4 23.3 16.1    
NPC FICTS 40.7 46.4 60.2 48.6 21.9 44.4   
uICTS 31.2 31.1 45.9 37.3 21.3 43.5   
FICTu 26.8 36.2 45.1 31.6 13.5 21.2   
PubChem FICTS 36.9 33.1 17.7 41.6 46.8 43.3 49.8  
uICTS 32.9 25.2 16.1 37.1 37.6 40.9 38.4  
FICTu 24.1 24.0 9.0 25.4 34.6 26.7 35.1  
TTD FICTS 27.7 36.9 32.3 40.3 18.2 43.0 22.4 25.4
uICTS 20.9 24.6 27.8 32.7 16.8 41.1 20.6 21.6
FICTu 15.2 26.0 17.8 23.0 10.1 22.0 9.2 13.8