1H-Indole-3-acetic acid, 5-hydroxy- 5-HIAA 5-Hydroxy-1H-indole-3-acetic acid 5-Hydroxyheteroauxin 5-Hydroxyindol-3-ylacetic acid 5-Hydroxyindole-3-acetic acid 5-Hydroxyindoleacetic acid 5-Hydroxyindolylacetic acid 5-Oxyindoleacetic acid 54-16-0 Indole-3-acetic acid, 5-hydroxy- Indoleacetic acid, 5-hydroxy- NSC90432