{
  "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": "6fe7d1d3-8cfb-4ff1-8993-8a38f1117171",
          "code": "36267-71-7",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=36267-71-7",
          "code_system": "CAS",
          "references": [
            "8639262f-1e8d-4c69-a5cb-7a884ccfba76",
            "c0042202-3a98-4a43-9cf6-ac75e06b5b33"
          ]
        },
        {
          "uuid": "a1da3834-fc2a-4fce-bb59-8accf64ac51a",
          "code": "252-940-8",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.048.113",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "8639262f-1e8d-4c69-a5cb-7a884ccfba76"
          ]
        },
        {
          "uuid": "c8ffeceb-8cc3-47d4-beee-b1d25495a6f6",
          "code": "61951",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/61951",
          "code_system": "PUBCHEM",
          "references": [
            "8639262f-1e8d-4c69-a5cb-7a884ccfba76"
          ]
        },
        {
          "uuid": "35fa99ff-6bae-7a87-a6d9-5506bceedd48",
          "code": "DTXSID1052038",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID1052038",
          "code_system": "EPA CompTox",
          "references": [
            "d29a6dcc-d7c8-36e3-1dac-f1efbc706e25"
          ]
        },
        {
          "uuid": "7bbf69f9-c90e-40ad-9c32-5a4ecc3ec130",
          "code": "56X379115Y",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "4b267e93-2fc8-8e8b-2797-dc18a06f62fb",
          "code": "1557",
          "type": "PRIMARY",
          "url": "https://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/1557/",
          "code_system": "JECFA MONOGRAPH",
          "references": [
            "4b6d3ad3-7df6-2a63-17da-395a162a4b5f"
          ]
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "a826de4a-5636-4990-8342-5ec23a5b0eb5",
          "name": "5,7- DIHYDRO-2-METHYL THIENO (3,4-D)PYRIMIDINE",
          "stdName": "5,7- DIHYDRO-2-METHYL THIENO (3,4-D)PYRIMIDINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "03e81974-59ff-40a3-8f11-0bdd8172b1a0",
            "0e80a0b7-0bad-4c70-ade4-556db773400b"
          ],
          "display_name": false
        },
        {
          "uuid": "d9582339-1934-4d59-812d-514b8a1c5f28",
          "name": "5,7-DIHYDRO-2-METHYLTHIENO(3,4-D)PYRIMIDINE",
          "stdName": "5,7-DIHYDRO-2-METHYLTHIENO(3,4-D)PYRIMIDINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "03e81974-59ff-40a3-8f11-0bdd8172b1a0",
            "0a296d09-f4c0-4392-a1a1-8b6821960d88",
            "0e80a0b7-0bad-4c70-ade4-556db773400b",
            "3e1952c7-f5be-480b-ab87-4026560414e1"
          ],
          "display_name": true
        },
        {
          "uuid": "cdf7a890-c3fe-4e2f-b017-da03ae00ab88",
          "name": "5,7-DIHYDRO-2-METHYLTHIENO(3,4-D)PYRIMIDINE [FHFI]",
          "stdName": "5,7-DIHYDRO-2-METHYLTHIENO(3,4-D)PYRIMIDINE [FHFI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "03e81974-59ff-40a3-8f11-0bdd8172b1a0",
            "0e80a0b7-0bad-4c70-ade4-556db773400b"
          ],
          "display_name": false
        },
        {
          "uuid": "40c1e0c9-9e20-4d25-a95f-a89dbb9ec2c7",
          "name": "FEMA NO. 3338",
          "stdName": "FEMA NO. 3338",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "0e80a0b7-0bad-4c70-ade4-556db773400b",
            "3e1952c7-f5be-480b-ab87-4026560414e1"
          ],
          "display_name": false
        },
        {
          "uuid": "7f7892bd-d9ff-45d8-ae82-c959e4c624f9",
          "name": "POPCORN PYRIMIDINE",
          "stdName": "POPCORN PYRIMIDINE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "0e80a0b7-0bad-4c70-ade4-556db773400b",
            "803aecb1-46e0-4c27-94fa-3626c01a608e"
          ],
          "display_name": false
        },
        {
          "uuid": "c213cd07-3265-4b77-a983-5c5e3f40b1d3",
          "name": "THIENO(3,4-D)PYRIMIDINE, 5,7-DIHYDRO-2-METHYL-",
          "stdName": "THIENO(3,4-D)PYRIMIDINE, 5,7-DIHYDRO-2-METHYL-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "0e80a0b7-0bad-4c70-ade4-556db773400b",
            "3e1952c7-f5be-480b-ab87-4026560414e1"
          ],
          "display_name": false
        },
        {
          "uuid": "f65b5331-5c56-4475-93d0-3c1d0e4a33ae",
          "name": "THIENYL PYRIMIDINE",
          "stdName": "THIENYL PYRIMIDINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "0e80a0b7-0bad-4c70-ade4-556db773400b",
            "dcfec64d-d385-4b25-8e3a-ece9139ebed5"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "3e1952c7-f5be-480b-ab87-4026560414e1",
          "citation": "ChemID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "0e80a0b7-0bad-4c70-ade4-556db773400b",
          "citation": "CHEMID",
          "doc_type": "CHEMID",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "03e81974-59ff-40a3-8f11-0bdd8172b1a0",
          "citation": "FHFI",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "803aecb1-46e0-4c27-94fa-3626c01a608e",
          "citation": "http://www.thegoodscentscompany.com/data/rw1035901.html",
          "url": "http://www.thegoodscentscompany.com/data/rw1035901.html",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "dcfec64d-d385-4b25-8e3a-ece9139ebed5",
          "citation": "CFSAN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "8639262f-1e8d-4c69-a5cb-7a884ccfba76",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390833000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "66a743e9-2be0-43a5-9735-9a127dac2898",
          "citation": "SRS import [56X379115Y]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=56X379115Y",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493390833000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "0a296d09-f4c0-4392-a1a1-8b6821960d88",
          "citation": "5,7-DIHYDRO-2-METHYLTHIENO(3,4-D)PYRIMIDINE [FHFI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "d29a6dcc-d7c8-36e3-1dac-f1efbc706e25",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=36267-71-7",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "c0042202-3a98-4a43-9cf6-ac75e06b5b33",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "4b6d3ad3-7df6-2a63-17da-395a162a4b5f",
          "citation": "JECFA",
          "doc_type": "JECFA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "dc78d3ef-3f57-41f2-a152-67ac23450d66",
          "id": "dc78d3ef-3f57-41f2-a152-67ac23450d66",
          "molfile": "\n  Marvin  01132111262D          \n\n 10 11  0  0  0  0            999 V2000\n    0.8362   -1.8159    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.8431   -0.9996    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.1330   -0.5880    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    0.1330    0.2353    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.8397    0.6435    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.0043    1.4530    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.8241    1.5456    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1672    0.7944    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.5566    0.2353    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.5566   -0.5880    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 10  2  2  0  0  0  0\n  4  3  2  0  0  0  0\n  5  4  1  0  0  0  0\n  5  6  1  0  0  0  0\n  5  9  2  0  0  0  0\n  6  7  1  0  0  0  0\n  8  7  1  0  0  0  0\n  9  8  1  0  0  0  0\n  9 10  1  0  0  0  0\nM  END",
          "smiles": "Cc1ncc2CSCc2n1",
          "formula": "C7H8N2S",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "87c4dd95-b0b9-4eb5-8eb5-52ddfc3e592a"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "152.2182",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "1be9e29d-719d-42db-ba0a-898e29dee26c",
      "version": "4",
      "structure": {
        "id": "0124f407-fe4b-49f9-801b-51f10a145f49",
        "molfile": "\n  Marvin  01132100222D          \n\n 10 11  0  0  0  0            999 V2000\n    0.8397    0.6435    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.5566    0.2353    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.0043    1.4530    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.1330    0.2353    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.5566   -0.5880    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1672    0.7944    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.8241    1.5456    0.0000 S   0  0  0  0  0  0  0  0  0  0  0  0\n    0.1330   -0.5880    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    0.8431   -0.9996    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.8362   -1.8159    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  2  0  0  0  0\n  1  3  1  0  0  0  0\n  1  4  1  0  0  0  0\n  2  5  1  0  0  0  0\n  2  6  1  0  0  0  0\n  3  7  1  0  0  0  0\n  4  8  2  0  0  0  0\n  5  9  2  0  0  0  0\n  9 10  1  0  0  0  0\n  6  7  1  0  0  0  0\n  8  9  1  0  0  0  0\nM  END",
        "smiles": "Cc1ncc2CSCc2n1",
        "formula": "C7H8N2S",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "152.2182",
        "optical_activity": "NONE",
        "references": [
          "3e1952c7-f5be-480b-ab87-4026560414e1",
          "66a743e9-2be0-43a5-9735-9a127dac2898"
        ],
        "stereo_centers": 0
      },
      "unii": "56X379115Y"
    }
  ]
}