{
  "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": "4f16dde1-6052-4238-9b2f-dfad20cd2a39",
          "code": "66893-81-0",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=66893-81-0",
          "code_system": "CAS",
          "references": [
            "07a4289d-7ff7-4042-980b-d56eb9b7ba46",
            "3ba3d7c9-2660-4c52-b63f-3810f3324494"
          ]
        },
        {
          "uuid": "5e6a9a60-f067-4983-a84b-50e3d4464279",
          "code": "266-512-3",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.060.447",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "07a4289d-7ff7-4042-980b-d56eb9b7ba46"
          ]
        },
        {
          "uuid": "c1ea3bb9-a09b-3485-40d6-b1f3f8eae839",
          "code": "DTXSID60217036",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID60217036",
          "code_system": "EPA CompTox",
          "references": [
            "619205b3-8031-459d-71ee-191acd81bc58"
          ]
        },
        {
          "uuid": "0cd79290-6fc0-3164-ec19-a43f11a15687",
          "code": "135532295",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/135532295",
          "code_system": "PUBCHEM",
          "references": [
            "8ab1db26-6807-0be5-1f46-59673a9c1f66"
          ]
        },
        {
          "uuid": "be1153a5-af3f-493d-83c8-0acfa93bdf98",
          "code": "2140SM8Q5O",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "4eedd382-522b-4182-b842-107f0902a190",
          "name": ".ALPHA.-(4-PYRIDYL-1-OXIDE)-N-T-BUTYLNITRONE",
          "stdName": ".ALPHA.-(4-PYRIDYL-1-OXIDE)-N-T-BUTYLNITRONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "dea6d2eb-3278-4d44-b21a-936c98da0063"
          ],
          "display_name": false
        },
        {
          "uuid": "1de5fb8b-7f9a-4160-8161-506305443eb8",
          "name": ".ALPHA.-(4-PYRIDYL-1-OXIDE)-N-TERT-BUTYLNITRONE",
          "stdName": ".ALPHA.-(4-PYRIDYL-1-OXIDE)-N-TERT-BUTYLNITRONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "dea6d2eb-3278-4d44-b21a-936c98da0063"
          ],
          "display_name": false
        },
        {
          "uuid": "1da3f24a-c1e1-4006-afc1-8cb0bb3ef103",
          "name": "2-PROPANAMINE, 2-METHYL-N-((1-OXIDO-4-PYRIDINYL)METHYLENE)-, N-OXIDE",
          "stdName": "2-PROPANAMINE, 2-METHYL-N-((1-OXIDO-4-PYRIDINYL)METHYLENE)-, N-OXIDE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "dea6d2eb-3278-4d44-b21a-936c98da0063"
          ],
          "display_name": false
        },
        {
          "uuid": "a6fce239-a426-47cb-93b9-df908a606e40",
          "name": "2-PROPANAMINE, 2-METHYL-N-(4-PYRIDINYLMETHYLENE)-, N,N'-DIOXIDE",
          "stdName": "2-PROPANAMINE, 2-METHYL-N-(4-PYRIDINYLMETHYLENE)-, N,N'-DIOXIDE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "dea6d2eb-3278-4d44-b21a-936c98da0063"
          ],
          "display_name": false
        },
        {
          "uuid": "1ca4988e-0d2a-421b-a840-f7f737295cff",
          "name": "C-(4-PYRIDINYL-N-OXIDE)-N-TERT-BUTYLNITRONE",
          "stdName": "C-(4-PYRIDINYL-N-OXIDE)-N-TERT-BUTYLNITRONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "dea6d2eb-3278-4d44-b21a-936c98da0063"
          ],
          "display_name": false
        },
        {
          "uuid": "50cc00c7-f886-4249-a224-751b34002352",
          "name": "N-TERT-BUTYL-'A-(4-PYRIDL)NITRONE N'-OXIDE",
          "stdName": "N-TERT-BUTYL-'A-(4-PYRIDL)NITRONE N'-OXIDE",
          "type": "bn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "22d80da0-5153-4184-b516-625aa8d57eaf",
            "583da0cc-19c6-4868-9306-bb59e9f8aad0"
          ],
          "display_name": false
        },
        {
          "uuid": "62e2bdbc-496a-47f0-b7c4-e015ad4cef93",
          "name": "N-TERT-BUTYL-.ALPHA.-(4-PYRIDYL-1-OXIDE) NITRONE",
          "stdName": "N-TERT-BUTYL-.ALPHA.-(4-PYRIDYL-1-OXIDE) NITRONE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "dea6d2eb-3278-4d44-b21a-936c98da0063"
          ],
          "display_name": false
        },
        {
          "uuid": "7f772c35-c553-4230-a0b4-25ea03010ad8",
          "name": "PYRIDYLOXIDE T-BUTYLNITRONE",
          "stdName": "PYRIDYLOXIDE T-BUTYLNITRONE",
          "type": "of",
          "languages": [
            "en"
          ],
          "preferred": true,
          "references": [
            "22d80da0-5153-4184-b516-625aa8d57eaf",
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "b69bbbd9-28f4-4e5a-bb0d-6b14a9938446",
            "17264616-7073-47b5-9d6f-5768d0914d52"
          ],
          "display_name": false,
          "domains": [
            "cosmetic"
          ],
          "name_orgs": [
            {
              "uuid": "a46306c5-c1fb-4705-b9f5-042eeb7eca1e",
              "name_org": "INCI"
            }
          ]
        },
        {
          "uuid": "74c3b159-1c91-4f3d-a9c5-f3c0f05a6930",
          "name": "PYRIDYLOXIDE TERT-BUTYLNITRONE",
          "stdName": "PYRIDYLOXIDE TERT-BUTYLNITRONE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "583da0cc-19c6-4868-9306-bb59e9f8aad0",
            "678803e5-9679-4499-8832-f407b3d1ac9e"
          ],
          "display_name": true
        }
      ],
      "references": [
        {
          "uuid": "22d80da0-5153-4184-b516-625aa8d57eaf",
          "citation": "PCPC-DB",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "583da0cc-19c6-4868-9306-bb59e9f8aad0",
          "citation": "PERSONAL CARE PRODUCTS COUNCIL",
          "doc_type": "PERSONAL CARE PRODUCTS COUNCIL",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "dea6d2eb-3278-4d44-b21a-936c98da0063",
          "citation": "STN",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "678803e5-9679-4499-8832-f407b3d1ac9e",
          "citation": "FDA_SRS",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "b69bbbd9-28f4-4e5a-bb0d-6b14a9938446",
          "citation": "PCPC",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "07a4289d-7ff7-4042-980b-d56eb9b7ba46",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391592000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "66388ec5-f234-48a1-b8a8-66a1695f20cf",
          "citation": "SRS import [2140SM8Q5O]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=2140SM8Q5O",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391592000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "17264616-7073-47b5-9d6f-5768d0914d52",
          "citation": "PYRIDYLOXIDE T-BUTYLNITRONE [INCI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "c1db765f-37e8-1799-649c-5678aa985fb8",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=66893-81-0",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "8ab1db26-6807-0be5-1f46-59673a9c1f66",
          "citation": "PUBCHEM",
          "doc_type": "PUBCHEM",
          "public_domain": true
        },
        {
          "uuid": "3ba3d7c9-2660-4c52-b63f-3810f3324494",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "619205b3-8031-459d-71ee-191acd81bc58",
          "citation": "EPA CompTox",
          "doc_type": "EPA",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "fe9a0030-3e79-487c-abaf-1d6dfe1f356b",
          "id": "fe9a0030-3e79-487c-abaf-1d6dfe1f356b",
          "molfile": "\n  Marvin  01132113112D          \n\n 14 14  0  0  0  0            999 V2000\n    6.2119   -1.4216    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.2119   -2.2466    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9264   -1.8341    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9264   -2.6591    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.4975   -2.6591    0.0000 N   0  3  0  0  0  0  0  0  0  0  0  0\n    5.4975   -3.4841    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    4.7830   -2.2466    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.0685   -2.6591    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.3540   -2.2466    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6396   -2.6591    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6396   -3.4841    0.0000 N   0  3  0  0  0  0  0  0  0  0  0  0\n    1.9251   -3.8966    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    3.3540   -3.8966    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.0685   -3.4841    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  2  4  1  0  0  0  0\n  2  5  1  0  0  0  0\n  5  6  1  0  0  0  0\n  5  7  2  0  0  0  0\n  7  8  1  0  0  0  0\n  9  8  1  0  0  0  0\n  8 14  2  0  0  0  0\n 10  9  2  0  0  0  0\n 10 11  1  0  0  0  0\n 11 12  1  0  0  0  0\n 13 11  2  0  0  0  0\n 14 13  1  0  0  0  0\nM  CHG  4   5   1   6  -1  11   1  12  -1\nM  END",
          "smiles": "CC(C)(C)/[N+](=C/c1cc[n+](cc1)[O-])/[O-]",
          "formula": "C10H14N2O2",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "434a4fdc-8324-43d7-89d4-14e5550d76b1"
          },
          "defined_stereo": 0,
          "ez_centers": 1,
          "molecular_weight": "194.2307",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "849ff7f5-ff9e-4d0f-8ff7-0f007b7e11a1",
      "version": "8",
      "structure": {
        "id": "92b04336-60e5-4db2-ba4a-f09bc68833ec",
        "molfile": "\n  Marvin  01132107362D          \n\n 14 14  0  0  0  0            999 V2000\n    6.2119   -1.4216    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.2119   -2.2466    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9264   -1.8341    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.4975   -2.6591    0.0000 N   0  3  0  0  0  0  0  0  0  0  0  0\n    4.7830   -2.2466    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.0685   -2.6591    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    3.3540   -2.2466    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6396   -2.6591    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.6396   -3.4841    0.0000 N   0  3  0  0  0  0  0  0  0  0  0  0\n    3.3540   -3.8966    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.0685   -3.4841    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.9251   -3.8966    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    5.4975   -3.4841    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0\n    6.9264   -2.6591    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  2  4  1  0  0  0  0\n  4  5  2  0  0  0  0\n  5  6  1  0  0  0  0\n  7  6  1  0  0  0  0\n  8  7  2  0  0  0  0\n  8  9  1  0  0  0  0\n 10  9  2  0  0  0  0\n 11 10  1  0  0  0  0\n  6 11  2  0  0  0  0\n  9 12  1  0  0  0  0\n  4 13  1  0  0  0  0\n  2 14  1  0  0  0  0\nM  CHG  4   4   1   9   1  12  -1  13  -1\nM  END",
        "smiles": "CC(C)(C)/[N+](=C/c1cc[n+](cc1)[O-])/[O-]",
        "formula": "C10H14N2O2",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 1,
        "molecular_weight": "194.2307",
        "optical_activity": "NONE",
        "references": [
          "dea6d2eb-3278-4d44-b21a-936c98da0063",
          "66388ec5-f234-48a1-b8a8-66a1695f20cf"
        ],
        "stereo_centers": 0
      },
      "unii": "2140SM8Q5O"
    }
  ]
}