{
  "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",
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          "smiles": "[Na+]",
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          "smiles": "C([C@@H](C(=O)O)[O-])C(=O)[O-]",
          "formula": "C4H4O5",
          "atropisomerism": "No",
          "charge": -2,
          "count": 1,
          "stereochemistry": "ABSOLUTE",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "b4ef8ee0-ba20-4b18-a425-4b45004b4332"
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          "ez_centers": 0,
          "molecular_weight": "132.0717",
          "optical_activity": "UNSPECIFIED",
          "stereo_centers": 1
        }
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      "version": "6",
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        "molfile": "\n  Marvin  01132106532D          \n\n 11  8  0  0  1  0            999 V2000\n    4.9452   -2.2851    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.6596   -2.6976    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.3742   -2.2851    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    5.6596   -3.5227    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    4.2306   -2.6976    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0\n    3.5162   -2.2851    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.8017   -2.6976    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    3.5162   -1.4600    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    4.2306   -3.5227    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   -0.1965   -1.3970    0.0000 Na  0  3  0  0  0  0  0  0  0  0  0  0\n   -0.1965   -1.3970    0.0000 Na  0  3  0  0  0  0  0  0  0  0  0  0\n  3  2  1  0  0  0  0\n  4  2  2  0  0  0  0\n  5  1  1  0  0  0  0\n  6  5  1  0  0  0  0\n  7  6  1  0  0  0  0\n  8  6  2  0  0  0  0\n  5  9  1  6  0  0  0\n  2  1  1  0  0  0  0\nM  CHG  4   3  -1   7  -1  10   1  11   1\nM  STY  1   1 MUL\nM  SCN  1   1 HT \nM  SAL   1  2  10  11\nM  SPA   1  1  10\nM  SDI   1  4   -0.6165   -1.8170   -0.6165   -0.9770\nM  SDI   1  4    0.2235   -0.9770    0.2235   -1.8170\nM  SMT   1 2\nM  END",
        "smiles": "C([C@@H](C(=O)[O-])O)C(=O)[O-].[Na+].[Na+]",
        "formula": "C4H4O5.2Na",
        "atropisomerism": "No",
        "charge": 0,
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        "stereochemistry": "ABSOLUTE",
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}