From: Consistency of systematic chemical identifiers within and between small-molecule databases
Database
MOL–InChI
MOL–SMILES
MOL–IUPAC
DrugBank
98.2
98.5
90.0
ChEBI
96.5
75.3
HMDB
89.3
37.2
55.7
PubChem
97.7
97.8
87.2
NPC
-
93.4