5-Amino-2-nitrobenzoic acid is a reagent used in preparation of polymer-bound diazonium salts and insulin receptor tyrosine kinase activator. It is also used in 2-component dendritic chain reactions and activation of hydrophobic dendrimers.

5-Aminogramine is an antagonistic gramine derivative of 5-Hydroxytryptamine.

5-Aminoindole is used in a variety of preparation applications. It is used to prepare cytotoxic and antimitotic agents, HIV protease inhibitors, PCKθ inhibitors, IGF-1 receptor inhibitors, anticancer agents, antivascular agents, tyrosine kinase receptor inhibitors, and Smac mimetics binding the XIAP apoptosis-inhibiting protein.

5-Aminoisophthalic acid is used in proteomics research.

5-Aminolevulinic acid benzyl ester is a protoporphyrin precursor used as a photodetection agent. Its derivatives can also be used to mediate gram-negative/positive bacteria.

5-Aminolevulinic acid hexyl ester is used in many fluorescence applications to detect cancer cells (such as bladder cancer) and protoporphyrin IX(PpIX) product that can be seen in photodetection.

5-Aminolevulinic acid hydrochloride can be used as an imaging assistant for the purposes of identification of cancerous cells in tissues by causing fluorescent porphyrin accumulation.

5-Aminolevulinic acid derivatives can temporarily increase Protoporphyrin IX concentrations in tissues for photodynamic therapy and imaging.