{
  "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": "2025-09-19",
    "results": {
      "skip": 0,
      "limit": 1,
      "total": 1
    }
  },
  "results": [
    {
      "codes": [
        {
          "uuid": "e131516e-29ee-47ed-aa86-955d9bccee04",
          "code": "13925-00-3",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=13925-00-3",
          "code_system": "CAS",
          "references": [
            "369e15a0-d0e1-4a5e-b8e9-2c8c60c67a18",
            "b08a4548-509f-4de4-9334-c9bcf53df581"
          ]
        },
        {
          "uuid": "0b6cde20-0c4d-4417-8293-7eb601f59b06",
          "code": "2-ETHYLPYRAZINE",
          "comments": "JECFA|FUNCTIONAL CLASSIFICATION|Flavouring Agent",
          "type": "PRIMARY",
          "url": "http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=3826",
          "code_system": "JECFA EVALUATION",
          "references": [
            "369e15a0-d0e1-4a5e-b8e9-2c8c60c67a18"
          ]
        },
        {
          "uuid": "05e7bd6d-57d9-4dbc-8523-959d9c1eedeb",
          "code": "237-691-5",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.034.250",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "369e15a0-d0e1-4a5e-b8e9-2c8c60c67a18"
          ]
        },
        {
          "uuid": "20064a44-b19f-41c3-907b-352567117972",
          "code": "26331",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/26331",
          "code_system": "PUBCHEM",
          "references": [
            "369e15a0-d0e1-4a5e-b8e9-2c8c60c67a18"
          ]
        },
        {
          "uuid": "f3722e75-da33-583b-2260-1b634bf079f6",
          "code": "DTXSID2065676",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID2065676",
          "code_system": "EPA CompTox",
          "references": [
            "4a302d79-db7c-5065-7d03-bee153829d26"
          ]
        },
        {
          "uuid": "d18f12db-5589-47c9-a45f-926db875b58b",
          "code": "0QO4LUV16Z",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "dcf25ba9-6844-72aa-9c24-80d76e1da3d5",
          "code": "73232",
          "type": "PRIMARY",
          "url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:73232",
          "code_system": "CHEBI",
          "references": [
            "eb868c0f-897a-ca0f-3e4d-2fa3a981f2d9"
          ]
        },
        {
          "uuid": "9fa0f490-c720-9951-786f-87fa5330c38b",
          "code": "844",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/844/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "a19cc7e8-fb40-ea26-0165-922db54809ff"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "7bbac5c0-8681-4897-b2f9-dbe81cb5ab71",
          "name": "2-ETHYL PYRAZINE",
          "stdName": "2-ETHYL PYRAZINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "ad512b7e-04a9-4540-bdda-ec3accc0d808"
          ],
          "display_name": false
        },
        {
          "uuid": "cb235916-27ed-435c-93c1-059003142daf",
          "name": "2-ETHYL-1,4-DIAZINE",
          "stdName": "2-ETHYL-1,4-DIAZINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "95f84e50-9d15-4a6f-929d-e4a08b98a053"
          ],
          "display_name": false
        },
        {
          "uuid": "4dd4d1b0-fd1f-4b08-8d35-69b8216792b7",
          "name": "2-ETHYLPYRAZINE",
          "stdName": "2-ETHYLPYRAZINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "37dd2108-0bd9-4b08-84bb-2062eee162e6",
            "0a77cff3-6e3e-419d-b6b0-c155e34be2e1",
            "3a7c2324-edb6-4e3c-8a5e-b75641ba5488"
          ],
          "display_name": true
        },
        {
          "uuid": "639673aa-ed1d-4994-b8ed-ab14bb719d41",
          "name": "2-ETHYLPYRAZINE [FHFI]",
          "stdName": "2-ETHYLPYRAZINE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "3a7c2324-edb6-4e3c-8a5e-b75641ba5488"
          ],
          "display_name": false
        },
        {
          "uuid": "60a65171-6724-4f2b-b7ae-0cf1da02c4a3",
          "name": "ETHYLPYRAZINE",
          "stdName": "ETHYLPYRAZINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "95f84e50-9d15-4a6f-929d-e4a08b98a053"
          ],
          "display_name": false
        },
        {
          "uuid": "eae01ccc-0775-49e7-96c2-0a2b9ff41abe",
          "name": "FEMA NO. 3281",
          "stdName": "FEMA NO. 3281",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5ccb722a-10ac-4046-b391-6e5f28880178",
            "ab00680a-1d58-4a68-9904-0e3f03d126e7"
          ],
          "display_name": false
        },
        {
          "uuid": "de2903d4-1206-4ceb-aaeb-1dbfd537334a",
          "name": "PYRAZINE, 2-ETHYL-",
          "stdName": "PYRAZINE, 2-ETHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "95f84e50-9d15-4a6f-929d-e4a08b98a053"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "5ccb722a-10ac-4046-b391-6e5f28880178",
          "citation": "CHEMID FEMA BATCH 2010",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "ab00680a-1d58-4a68-9904-0e3f03d126e7",
          "citation": "CHEMID BATCH 2010",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ad512b7e-04a9-4540-bdda-ec3accc0d808",
          "citation": "GRAS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "95f84e50-9d15-4a6f-929d-e4a08b98a053",
          "citation": "CHEMID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "3a7c2324-edb6-4e3c-8a5e-b75641ba5488",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "37dd2108-0bd9-4b08-84bb-2062eee162e6",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "369e15a0-d0e1-4a5e-b8e9-2c8c60c67a18",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390976000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "58b8c2f9-2f70-4f4c-8c2a-320a41541437",
          "citation": "SRS import [0QO4LUV16Z]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=0QO4LUV16Z",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390976000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "45e320df-1fb4-402e-a2dd-683a6ff92dd2",
          "citation": "CHEMID 2010",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "0a77cff3-6e3e-419d-b6b0-c155e34be2e1",
          "citation": "2-ETHYLPYRAZINE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "4a302d79-db7c-5065-7d03-bee153829d26",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=13925-00-3",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "eb868c0f-897a-ca0f-3e4d-2fa3a981f2d9",
          "doc_type": "SYSTEM",
          "public_domain": true
        },
        {
          "uuid": "b08a4548-509f-4de4-9334-c9bcf53df581",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "a19cc7e8-fb40-ea26-0165-922db54809ff",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "929d911d-0887-40c0-882f-07b8bbdfe16a",
          "id": "929d911d-0887-40c0-882f-07b8bbdfe16a",
          "molfile": "\n  Marvin  01132107362D          \n\n  8  8  0  0  0  0            999 V2000\n    8.0155   -4.4008    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.2935   -3.9980    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5905   -4.4264    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5905   -5.2571    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.8828   -5.6652    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    5.1552   -5.2571    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.1552   -4.4349    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.8828   -4.0154    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  0  0  0  0\n  3  2  1  0  0  0  0\n  3  4  1  0  0  0  0\n  3  8  2  0  0  0  0\n  4  5  2  0  0  0  0\n  5  6  1  0  0  0  0\n  7  6  2  0  0  0  0\n  8  7  1  0  0  0  0\nM  END",
          "smiles": "CCc1cnccn1",
          "formula": "C6H8N2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "f23b0b65-dc99-4a53-ba8c-863a77f2bf75"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "108.1413",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "3c3ee0f0-7af5-44ad-b05c-b8cac6bd05de",
      "version": "5",
      "structure": {
        "id": "35f2e047-8bcc-48ba-8ed5-81fc059e3427",
        "molfile": "\n  Marvin  01132102522D          \n\n  8  8  0  0  0  0            999 V2000\n    6.5905   -4.4264    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.5905   -5.2571    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.8828   -5.6652    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    5.1552   -5.2571    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.1552   -4.4349    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.8828   -4.0154    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.2935   -3.9980    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.0155   -4.4008    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  2  0  0  0  0\n  2  3  1  0  0  0  0\n  3  4  2  0  0  0  0\n  5  4  1  0  0  0  0\n  6  5  2  0  0  0  0\n  1  6  1  0  0  0  0\n  1  7  1  0  0  0  0\n  7  8  1  0  0  0  0\nM  END",
        "smiles": "CCc1cnccn1",
        "formula": "C6H8N2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "108.1413",
        "optical_activity": "NONE",
        "references": [
          "45e320df-1fb4-402e-a2dd-683a6ff92dd2",
          "58b8c2f9-2f70-4f4c-8c2a-320a41541437"
        ],
        "stereo_centers": 0
      },
      "unii": "0QO4LUV16Z"
    }
  ]
}