{
  "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
    }
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    {
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        {
          "uuid": "8241d889-f6cc-4f50-87b1-94accc95c51d",
          "code": "68516-75-6",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=68516-75-6",
          "code_system": "CAS",
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          "code": "271-178-7",
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          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.064.688",
          "code_system": "ECHA (EC/EINECS)",
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        {
          "uuid": "ce613b3b-2a12-b1fa-dec9-05d5e0747ab2",
          "code": "DTXSID201015066",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID201015066",
          "code_system": "EPA CompTox"
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "60c4a5ae-b190-449c-a535-891aff8cc332",
          "name": "2-NAPHTHALENECARBOXAMIDE, N,N'-1,5-NAPHTHALENEDIYLBIS(4-(2-(2,3-DICHLOROPHENYL)DIAZENYL)-3-HYDROXY-",
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          "citation": "SRS CODE IMPORT",
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          "smiles": "c1ccc2c(c1)cc(c(c2/N=N/c3cccc(c3Cl)Cl)O)C(=O)Nc4cccc5c4cccc5NC(=O)c6cc7ccccc7c(c6O)/N=N/c8cccc(c8Cl)Cl",
          "formula": "C44H26Cl4N6O4",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "482581e5-d3c5-42a9-8fe4-d41b165c7fc7"
          },
          "defined_stereo": 0,
          "ez_centers": 2,
          "molecular_weight": "844.5284",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
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      "definition_level": "COMPLETE",
      "uuid": "f585ce2a-db46-4dad-a666-10510a593589",
      "version": "5",
      "structure": {
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0  0  0  0  0\n    7.9612    2.3370    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.3737    3.0515    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1987    3.0515    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.6112    2.3370    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1987    1.6225    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.9612    3.7660    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    7.1362    2.3370    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n    0.5362    0.9081    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.9487    0.1936    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.5362   -0.5209    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.2888   -0.5209    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.7012    0.1936    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.5262    0.1936    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.9387    0.9081    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.5262    1.6225    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.7012    1.6225    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.2888    0.9081    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.7737    0.1936    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1862    0.9081    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    2.1862   -0.5209    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    0.9487   -1.2353    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.7012   -1.2353    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.5262   -1.2353    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.9387   -1.9498    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.5262   -2.6643    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.9387   -3.3787    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.7637   -3.3787    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -3.1763   -2.6643    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -2.7637   -1.9498    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   -1.5262   -4.0932    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n   -0.7012   -2.6643    0.0000 Cl  0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  2  0  0  0  0\n  3  4  1  0  0  0  0\n  4  5  2  0  0  0  0\n  5  6  1  0  0  0  0\n  6  7  2  0  0  0  0\n  7  8  1  0  0  0  0\n  8  9  2  0  0  0  0\n  9 10  1  0  0  0  0\n  1 10  2  0  0  0  0\n  5 10  1  0  0  0  0\n 11 12  1  0  0  0  0\n 12 13  2  0  0  0  0\n 13 14  1  0  0  0  0\n 14 15  2  0  0  0  0\n 15 16  1  0  0  0  0\n 16 17  2  0  0  0  0\n 17 18  1  0  0  0  0\n 18 19  2  0  0  0  0\n 19 20  1  0  0  0  0\n 11 20  2  0  0  0  0\n 15 20  1  0  0  0  0\n 21 22  2  0  0  0  0\n 21 23  1  0  0  0  0\n 12 21  1  0  0  0  0\n 13 24  1  0  0  0  0\n 25 26  2  0  0  0  0\n 27 28  1  0  0  0  0\n 28 29  2  0  0  0  0\n 29 30  1  0  0  0  0\n 30 31  2  0  0  0  0\n 31 32  1  0  0  0  0\n 27 32  2  0  0  0  0\n 29 33  1  0  0  0  0\n 28 34  1  0  0  0  0\n 26 27  1  0  0  0  0\n 14 25  1  0  0  0  0\n  1 23  1  0  0  0  0\n 35 36  1  0  0  0  0\n 36 37  2  0  0  0  0\n 37 38  1  0  0  0  0\n 38 39  2  0  0  0  0\n 39 40  1  0  0  0  0\n 40 41  2  0  0  0  0\n 41 42  1  0  0  0  0\n 42 43  2  0  0  0  0\n 43 44  1  0  0  0  0\n 35 44  2  0  0  0  0\n 39 44  1  0  0  0  0\n 45 46  2  0  0  0  0\n 45 47  1  0  0  0  0\n 36 45  1  0  0  0  0\n 37 48  1  0  0  0  0\n 49 50  2  0  0  0  0\n 51 52  1  0  0  0  0\n 52 53  2  0  0  0  0\n 53 54  1  0  0  0  0\n 54 55  2  0  0  0  0\n 55 56  1  0  0  0  0\n 51 56  2  0  0  0  0\n 53 57  1  0  0  0  0\n 52 58  1  0  0  0  0\n 50 51  1  0  0  0  0\n 38 49  1  0  0  0  0\n  6 47  1  0  0  0  0\nM  END",
        "smiles": "c1ccc2c(c1)cc(c(c2/N=N/c3cccc(c3Cl)Cl)O)C(=O)Nc4cccc5c4cccc5NC(=O)c6cc7ccccc7c(c6O)/N=N/c8cccc(c8Cl)Cl",
        "formula": "C44H26Cl4N6O4",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 2,
        "molecular_weight": "844.5284",
        "optical_activity": "NONE",
        "references": [
          "2f2bbecd-c6a6-4677-a824-f87c287dfdc4",
          "14f6c13a-e32f-4806-80b1-177c5b23d9f7"
        ],
        "stereo_centers": 0
      },
      "unii": "YS2PES3Y8W"
    }
  ]
}