| Product name： | Protocatechuic Acid |
| Synonym： | Carbohydroquinonic acid; Catechol-4-carboxylic acid; Hypogallic acid |
| Purity： | 98% + by HPLC |
| Appearance： | |
| Chemical Family： | Phenols |
| Canonical SMILES： | OC1C=C(C=CC=1O)C(O)=O |
| Botanical Source： | Can be extracted from lignin. Isol. in free state from various higher plants, e.g. Fagopyrum and Alnus spp. and some Allium spp. |
