{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2026-09-09",
    "results": {
      "skip": 0,
      "limit": 1,
      "total": 1
    }
  },
  "results": [
    {
      "codes": [
        {
          "uuid": "0531a37e-4663-4644-90bb-2e1ef72b4137",
          "code": "3943-89-3",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=3943-89-3",
          "code_system": "CAS",
          "references": [
            "b7be11b6-4cf8-4be1-8e2b-f927b99f5c0c",
            "c96cc2e6-7880-4c8d-9ea4-709f8a798ca5"
          ]
        },
        {
          "uuid": "26e0fe53-15e6-423a-ae4f-2c8d7aa1e417",
          "code": "ETHYL PROTOCATECHUATE",
          "type": "PRIMARY",
          "url": "https://en.wikipedia.org/wiki/Ethyl_protocatechuate",
          "code_system": "WIKIPEDIA",
          "references": [
            "b7be11b6-4cf8-4be1-8e2b-f927b99f5c0c"
          ]
        },
        {
          "uuid": "61765d19-4108-4557-8d8c-972590d208df",
          "code": "223-529-0",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.021.391",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "b7be11b6-4cf8-4be1-8e2b-f927b99f5c0c"
          ]
        },
        {
          "uuid": "d80a470a-118f-4379-b62a-99f480a8662a",
          "code": "77547",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/77547",
          "code_system": "PUBCHEM",
          "references": [
            "b7be11b6-4cf8-4be1-8e2b-f927b99f5c0c"
          ]
        },
        {
          "uuid": "0f765555-48f8-c74b-b6ce-8aa835323640",
          "code": "DTXSID2057732",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID2057732",
          "code_system": "EPA CompTox",
          "references": [
            "80ff6b46-e219-951e-4716-225cdf08c6bd"
          ]
        },
        {
          "uuid": "f7359dd8-faf4-4f5f-b258-3a5b7f1a9c2a",
          "code": "4YGJ96WTBG",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "42697fce-4794-8c68-f5c3-e3c94629b241",
          "code": "132364",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:132364",
          "code_system": "CHEBI",
          "references": [
            "17badaaf-77a4-493f-2363-94e551968455"
          ]
        },
        {
          "uuid": "3c380b91-f0bc-522c-254e-cf7332d43328",
          "code": "86130",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=86130",
          "code_system": "NSC",
          "references": [
            "8775f199-7a51-cb7c-221c-977dd6dbab04"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "45b2223c-7610-42f5-86d2-c58aaed5fb73",
          "name": "ETHYL 3,4-DIHYDROXYBENZOATE",
          "stdName": "ETHYL 3,4-DIHYDROXYBENZOATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "06c473e6-f19f-4299-8154-ae670869d71a",
            "75b49d72-1381-4e56-9d81-f396e397aa12"
          ],
          "display_name": false
        },
        {
          "uuid": "5f7ae5f4-24ac-477a-aba1-f38740c92c26",
          "name": "ETHYL PROTOCATECHUATE",
          "stdName": "ETHYL PROTOCATECHUATE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "33c146b0-8b26-4a33-b3a7-030b21ca417e"
          ],
          "display_name": true
        },
        {
          "uuid": "a5b226f2-3da5-43a0-afde-40ce9e7bb9ef",
          "name": "NSC-86130",
          "stdName": "NSC-86130",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "06c473e6-f19f-4299-8154-ae670869d71a",
            "b7cc02aa-4168-4b1b-a54f-16c1fffe835a"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "33c146b0-8b26-4a33-b3a7-030b21ca417e",
          "citation": "CHEMID 2011",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "75b49d72-1381-4e56-9d81-f396e397aa12",
          "citation": "http://www.chemicalbook.com/ProdSupplierGNCB0175010_EN.htm",
          "url": "http://www.chemicalbook.com/ProdSupplierGNCB0175010_EN.htm",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "06c473e6-f19f-4299-8154-ae670869d71a",
          "citation": "WEB PAGE",
          "doc_type": "WEB PAGE",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b7cc02aa-4168-4b1b-a54f-16c1fffe835a",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b7be11b6-4cf8-4be1-8e2b-f927b99f5c0c",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391118000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "2a633b42-baad-4b16-8680-bce3cf128f31",
          "citation": "SRS import [4YGJ96WTBG]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=4YGJ96WTBG",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391118000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "155a6d30-d6f3-4e7a-9741-3a626e2e6690",
          "citation": "CHEMID  2011",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "80ff6b46-e219-951e-4716-225cdf08c6bd",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=3943-89-3",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "17badaaf-77a4-493f-2363-94e551968455",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "8775f199-7a51-cb7c-221c-977dd6dbab04",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        },
        {
          "uuid": "c96cc2e6-7880-4c8d-9ea4-709f8a798ca5",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "dd0c5283-7db6-4861-be57-b1d0f45c244b",
          "id": "dd0c5283-7db6-4861-be57-b1d0f45c244b",
          "molfile": "\n  Marvin  01132111282D          \n\n 13 13  0  0  0  0            999 V2000\n    8.5621   -7.3994    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.5621   -6.5713    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.8544   -6.1551    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.8544   -5.3224    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.5621   -4.9061    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.1512   -4.9061    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4435   -5.3224    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7312   -4.9061    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7312   -4.0781    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.0281   -3.6617    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4435   -3.6617    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4435   -2.8292    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.1512   -4.0781    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  1  0  0  0  0\n  3  4  1  0  0  0  0\n  5  4  2  0  0  0  0\n  6  4  1  0  0  0  0\n  7  6  1  0  0  0  0\n 13  6  2  0  0  0  0\n  8  7  2  0  0  0  0\n  9  8  1  0  0  0  0\n 10  9  1  0  0  0  0\n 11  9  2  0  0  0  0\n 12 11  1  0  0  0  0\n 11 13  1  0  0  0  0\nM  END",
          "smiles": "CCOC(=O)c1ccc(c(c1)O)O",
          "formula": "C9H10O4",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "785bea2e-9fe3-456f-84c7-901b88167f23"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "182.1737",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "dc41d3a9-da40-487d-949a-0b7078d79be5",
      "version": "8",
      "structure": {
        "id": "5afc7f1f-e321-4d71-85e9-378a3dbdab7c",
        "molfile": "\n  Marvin  01132104432D          \n\n 13 13  0  0  0  0            999 V2000\n    7.8544   -5.3224    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.1512   -4.9061    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.1512   -4.0781    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4435   -3.6617    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4435   -2.8292    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7312   -4.0781    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.7312   -4.9061    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.4435   -5.3224    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.0281   -3.6617    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    8.5621   -4.9061    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    7.8544   -6.1551    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    8.5621   -6.5713    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.5621   -7.3994    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  3  2  2  0  0  0  0\n  4  3  1  0  0  0  0\n  5  4  1  0  0  0  0\n  4  6  2  0  0  0  0\n  6  7  1  0  0  0  0\n  7  8  2  0  0  0  0\n  8  2  1  0  0  0  0\n  9  6  1  0  0  0  0\n 10  1  2  0  0  0  0\n 11  1  1  0  0  0  0\n 12 11  1  0  0  0  0\n 13 12  1  0  0  0  0\nM  END",
        "smiles": "CCOC(=O)c1ccc(c(c1)O)O",
        "formula": "C9H10O4",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "182.1737",
        "optical_activity": "NONE",
        "references": [
          "2a633b42-baad-4b16-8680-bce3cf128f31",
          "155a6d30-d6f3-4e7a-9741-3a626e2e6690"
        ],
        "stereo_centers": 0
      },
      "unii": "4YGJ96WTBG"
    }
  ]
}