Indole is an aromatic heterocyclic organic compound. It has a bicyclic structure consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing pyrrole ring.

Teneligliptin is a novel, potent, and long-lasting dipeptidyl peptidase-4 inhibitor; competitively inhibited human plasma, rat plasma, and human recombinant DPP-4 in vitro, with IC50 values of approximately 1 nM.

HCV-IN-30 is an HCV NS5A replication complex inhibitor (IC50s: 901 and 102 nM for genotypes 1a and 1b replicons).