5-Methylindole-3-carboxaldehyde is a reagent used in chemical synthesis. It has been used in the synthesis of carboline derivatives for the treatment of cancer, pyrimidines inhibiting h. pylori infections 5-ht2c agonists, and flexible tripodal ligands useful with metal complexes.

5-Nitroindole is a reagent involved in the synthesis of a variety of biochemical compounds, including: 2-oxo-1-pyrrolidine analogs, mGlu4 allosteric modulators, protein kinase inhibitors, antiproliferative agents, anti-HIV 1 agents, antifungal agents, anti-leukemic agents, antivascular agents, anticancer agents, and cannabinoid receptor type 1 (CB1) antagonists.

6-Fluorogramine is a reagent used for chemical synthesis. It has been used in the synthesis of 5-HT6 receptor antagonists and beta3 agonists.

6-Methoxyindole reactant used in the synthesis of tryptophan dioxygenase inhibitors, antitumor agents, T cell kinase inhibitors, VEGFR-2 inhibitors, and HIV-1 inhibitors. Additionally, it is used to study protonated, excited-state forms of serotonin and inhibits myeloperoxidase.

6-Nitroindole is a reagent used in chemical synthesis. It is a universal base with oligodeoxynucleotides. It has been used in the synthesis of several DNA and RNA based modulators and inhibitors.

7-Fluoroindole is a reagent used in chemical synthesis. It has been used to synthesize antiviral compounds against Pseudomonas aeruginosa and Staphylococcus aureus along with creation of immunomodulators.

7-Methylindole is a reagent used in chemical synthesis. It has been used in the synthesis of HIV-1 inhibitors, plant growth inhibitors and antifungal agents.

7-Methylindole-2-carboxylic acid is a reagent used in chemical synthesis. It has been used to synthesize CCK1 receptor antagonists and Xa inhbiitors.

7-Methylindole-3-acetic acid is a reagent used in chemical synthesis. It can be used to synthesize alpha-amino-indole-3-acetic acids that are used as anti-diabetic, anti-obesity and anti-atherosclerotic agents.

DL-Indole-3-lactic acid is a reagent used in chemical synthesis. It is one of the building blocks of the sweetener Monatin and Fab I inhibitors. It is a tryptophan metabolite of Bifidobacterium.

Indole-2-Carboxylic Acid is used in Pd-catalyzed cyclization reactions and for the preparation of spirooxindole-pyrrolidones.