| Product nomen | Protocatechuic Acidum |
| Synonyma | Acidum carbohydroquinonicum;Catechol-acidi 4-carboxylici;Acidum hypotheticum |
| Puritas | 98% + by HPLC |
| Aspectus | |
| Familiae chemica | Phenols |
| CANONICI SMILES： | OC1C=C(C=CC=1O)C(O)=O* |
| Botanical Source： | Extrahi de lignin.Isol.in statu libero e variis plantis superioribus, eg Fagopyrum et Alnum spp.Allium spp. |