(R)-(-)-2-Methylpiperazine

Indoline-3-carboxylic acid

3-Bromo-4-hydroxybenzoic acid

5-Aminolevulinic acid hydrochloride

Methyl 2-oxindole-5-carboxylate

6-Chloroindole-2-carboxylic acid ethyl ester

6-Chloroindole-2-carboxylic acid ethyl ester

Indole-2,5-dicarboxylic acid