{
  "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": "98b5a5ab-dc19-498f-a134-f8d4d7955b06",
          "code": "537-65-5",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=537-65-5",
          "code_system": "CAS",
          "references": [
            "69752003-9e72-443a-9972-2f80a3b9ed37",
            "cd520e80-d482-4fc6-ad7e-1fcc4f897950"
          ]
        },
        {
          "uuid": "684aa552-3438-4349-b785-ee1a84dd56d6",
          "code": "208-673-4",
          "type": "PRIMARY",
          "url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.007.887",
          "code_system": "ECHA (EC/EINECS)",
          "references": [
            "69752003-9e72-443a-9972-2f80a3b9ed37"
          ]
        },
        {
          "uuid": "5a81c4d6-2c61-4947-b6fb-52bd3c172a39",
          "code": "m4251",
          "comments": "Merck Index",
          "type": "PRIMARY",
          "url": "https://merckindex.rsc.org/monographs/m4251?q=authorize",
          "code_system": "MERCK INDEX",
          "references": [
            "69752003-9e72-443a-9972-2f80a3b9ed37"
          ]
        },
        {
          "uuid": "bf6bc0c3-c320-4c90-8f0f-d35b0c8a33b7",
          "code": "10841",
          "type": "PRIMARY",
          "url": "https://pubchem.ncbi.nlm.nih.gov/compound/10841",
          "code_system": "PUBCHEM",
          "references": [
            "69752003-9e72-443a-9972-2f80a3b9ed37"
          ]
        },
        {
          "uuid": "0c9d9d6e-9e74-9a2d-43c0-d7f1b6e26d52",
          "code": "DTXSID1060217",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID1060217",
          "code_system": "EPA CompTox",
          "references": [
            "c2347f34-d9ed-bac3-b13d-948077157230"
          ]
        },
        {
          "uuid": "45c1a889-693c-40ec-9b10-a1302f218cba",
          "code": "R24HL8M2C7",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "ce4ca392-b19b-8b43-5e0d-5cd368481f7c",
          "code": "33417",
          "type": "PRIMARY",
          "url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=33417",
          "code_system": "NSC",
          "references": [
            "904746ea-4568-2ccb-0b1f-41ace5a4aafc"
          ]
        }
      ],
      "relationships": [
        {
          "uuid": "7aa7c11f-d051-4393-b244-0b7c40896c07",
          "type": "SALT/SOLVATE->PARENT",
          "related_substance": {
            "uuid": "f6a84396-2bc1-4d6b-ac90-565a871cc677",
            "refuuid": "e902e0e1-d891-4d2d-b157-36d868b54182",
            "name": "4,4'-DIAMINODIPHENYLAMINE HEMISULFATE",
            "unii": "ZOM11VUZ0Z",
            "linking_id": "ZOM11VUZ0Z",
            "ref_pname": "4,4'-DIAMINODIPHENYLAMINE HEMISULFATE",
            "substance_class": "reference"
          }
        }
      ],
      "substance_class": "chemical",
      "names": [
        {
          "uuid": "debeacd2-3706-427f-ad35-0f229b3c4ae5",
          "name": "1,4-BENZENEDIAMINE, N-(4-AMINOPHENYL)-",
          "stdName": "1,4-BENZENEDIAMINE, N-(4-AMINOPHENYL)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8d722fb5-b81a-4ba3-aee3-54e4344a2073",
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f"
          ],
          "display_name": false
        },
        {
          "uuid": "b91ce83e-9b9c-430e-ae1f-061ec24e98dc",
          "name": "1,4-BENZENEDIAMINE, N1-(4-AMINOPHENYL)-",
          "stdName": "1,4-BENZENEDIAMINE, N1-(4-AMINOPHENYL)-",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8d722fb5-b81a-4ba3-aee3-54e4344a2073",
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f"
          ],
          "display_name": false
        },
        {
          "uuid": "5910ecd9-553f-4087-b575-0e5c80d75df0",
          "name": "4,4'-DIAMINODIPHENYLAMINE",
          "stdName": "4,4'-DIAMINODIPHENYLAMINE",
          "type": "of",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "bdf99e89-c5b6-4261-8fbd-749bf590e93e",
            "ca730c7c-c896-4ad8-91b9-e4c488a2d1fe",
            "a991b863-9e00-40e7-b270-c81493a2bc35",
            "14666711-d84a-4e62-b3ca-634103c80f1c",
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f",
            "3aae7e8f-a463-486f-8987-db23da372abc"
          ],
          "display_name": true,
          "domains": [
            "cosmetic"
          ],
          "name_orgs": [
            {
              "uuid": "e848b6dd-3729-4979-aed4-8fe5dd2ef309",
              "name_org": "INCI"
            }
          ]
        },
        {
          "uuid": "960e28e6-d4ce-4461-848d-c409508da45e",
          "name": "4,4'-DIAMINODIPHENYLAMINE [MI]",
          "stdName": "4,4'-DIAMINODIPHENYLAMINE [MI]",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f",
            "3aae7e8f-a463-486f-8987-db23da372abc"
          ],
          "display_name": false
        },
        {
          "uuid": "b068f68c-7539-4841-96b7-ebcb1b8ed1a6",
          "name": "4,4'-IMINODIANILINE",
          "stdName": "4,4'-IMINODIANILINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8d722fb5-b81a-4ba3-aee3-54e4344a2073",
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f"
          ],
          "display_name": false
        },
        {
          "uuid": "353bcbad-3ed5-4687-bd6d-2439f5f16561",
          "name": "C.I. 76120",
          "stdName": "C.I. 76120",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f",
            "a9acbec2-e16b-4444-8477-facdf857fadf"
          ],
          "display_name": false
        },
        {
          "uuid": "01962646-4b9a-471e-82bd-b673cefe0d53",
          "name": "DIAZOL BLACK C",
          "stdName": "DIAZOL BLACK C",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f",
            "a9acbec2-e16b-4444-8477-facdf857fadf"
          ],
          "display_name": false
        },
        {
          "uuid": "6e81ce12-1fd1-456c-b60f-8c5a777f0b8f",
          "name": "DIPHENYLAMINE, 4,4'-DIAMINO-",
          "stdName": "DIPHENYLAMINE, 4,4'-DIAMINO-",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8d722fb5-b81a-4ba3-aee3-54e4344a2073",
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f"
          ],
          "display_name": false
        },
        {
          "uuid": "7cb7ef61-623a-4577-819a-dc75e0adf123",
          "name": "N1-(4-AMINOPHENYL)-1,4-BENZENEDIAMINE",
          "stdName": "N1-(4-AMINOPHENYL)-1,4-BENZENEDIAMINE",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f",
            "a9acbec2-e16b-4444-8477-facdf857fadf"
          ],
          "display_name": false
        },
        {
          "uuid": "8f21a0d0-a125-49e8-bedd-9ab1f375a072",
          "name": "NSC-33417",
          "stdName": "NSC-33417",
          "type": "cd",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8d722fb5-b81a-4ba3-aee3-54e4344a2073",
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f"
          ],
          "display_name": false
        },
        {
          "uuid": "85241dde-30e7-407a-a832-6e8f8a7ca34b",
          "name": "P-P'-DIAMINODIPHENYLAMINE",
          "stdName": "P-P'-DIAMINODIPHENYLAMINE",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f",
            "a9acbec2-e16b-4444-8477-facdf857fadf"
          ],
          "display_name": false
        }
      ],
      "references": [
        {
          "uuid": "14666711-d84a-4e62-b3ca-634103c80f1c",
          "citation": "MERCK",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE",
            "AUTO_SELECTED"
          ]
        },
        {
          "uuid": "3aae7e8f-a463-486f-8987-db23da372abc",
          "citation": "MERCK INDEX",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "5bfed3e2-4f2d-4d89-8e7a-0da031f67a1f",
          "citation": "MERCK INDEX",
          "doc_type": "MERCK INDEX",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "a9acbec2-e16b-4444-8477-facdf857fadf",
          "citation": "Merck",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "8d722fb5-b81a-4ba3-aee3-54e4344a2073",
          "citation": "ChemID",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "a991b863-9e00-40e7-b270-c81493a2bc35",
          "citation": "PCPC",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "69752003-9e72-443a-9972-2f80a3b9ed37",
          "citation": "SRS CODE IMPORT",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391017000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "f450a32f-f1eb-483f-a03c-e859d0f56c5d",
          "citation": "SRS import [R24HL8M2C7]",
          "url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=R24HL8M2C7",
          "doc_type": "SRS",
          "public_domain": true,
          "document_date": 1493391017000,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "77417bbc-65c6-4324-98aa-1c7431ef2d97",
          "citation": "CHEMID  2011",
          "doc_type": "SRS",
          "public_domain": true,
          "tags": [
            "NOMEN"
          ]
        },
        {
          "uuid": "ca730c7c-c896-4ad8-91b9-e4c488a2d1fe",
          "citation": "4,4'-DIAMINODIPHENYLAMINE [MI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "bdf99e89-c5b6-4261-8fbd-749bf590e93e",
          "citation": "4,4'-DIAMINODIPHENYLAMINE [INCI]",
          "doc_type": "SRS_LOCATOR",
          "public_domain": true
        },
        {
          "uuid": "c2347f34-d9ed-bac3-b13d-948077157230",
          "citation": "WEBSITE",
          "url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=537-65-5",
          "doc_type": "WEBSITE",
          "public_domain": true,
          "tags": [
            "NOMEN",
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "cd520e80-d482-4fc6-ad7e-1fcc4f897950",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "904746ea-4568-2ccb-0b1f-41ace5a4aafc",
          "citation": "NCI",
          "doc_type": "NCI DRUG DICTIONARY",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "moieties": [
        {
          "uuid": "ebdd985e-133a-4eab-aad9-d52deb1ff7b1",
          "id": "ebdd985e-133a-4eab-aad9-d52deb1ff7b1",
          "molfile": "\n  Marvin  01132112122D          \n\n 15 16  0  0  0  0            999 V2000\n    9.8779   -5.9982    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1418   -5.5584    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.4278   -5.9717    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7227   -5.5584    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7227   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9890   -4.3249    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    6.2418   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.5367   -4.3249    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8160   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8160   -5.5827    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1132   -6.0202    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    5.5367   -5.9982    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.2418   -5.5827    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.4278   -4.3249    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1418   -4.7449    0.0000 C   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 15  2  2  0  0  0  0\n  4  3  2  0  0  0  0\n  5  4  1  0  0  0  0\n  6  5  1  0  0  0  0\n  5 14  2  0  0  0  0\n  7  6  1  0  0  0  0\n  7  8  1  0  0  0  0\n  7 13  2  0  0  0  0\n  8  9  2  0  0  0  0\n  9 10  1  0  0  0  0\n 10 11  1  0  0  0  0\n 12 10  2  0  0  0  0\n 13 12  1  0  0  0  0\n 14 15  1  0  0  0  0\nM  END",
          "smiles": "c1cc(ccc1N)Nc2ccc(cc2)N",
          "formula": "C12H13N3",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ACHIRAL",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "6b9fb8f6-46c4-4a60-83dc-b77941d476b2"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "199.2522",
          "optical_activity": "NONE",
          "stereo_centers": 0
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "66cf8c12-2b56-4bb0-96b2-38f944a8ed94",
      "version": "5",
      "structure": {
        "id": "ddf566c2-429c-4aa9-a1fd-b7b5a203b97b",
        "molfile": "\n  Marvin  01132111302D          \n\n 15 16  0  0  0  0            999 V2000\n    6.2418   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.9890   -4.3249    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7227   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    7.7227   -5.5584    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.4278   -5.9717    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1418   -5.5584    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.8779   -5.9982    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    9.1418   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.4278   -4.3249    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    5.5367   -4.3249    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8160   -4.7449    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.8160   -5.5827    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    4.1132   -6.0202    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    5.5367   -5.9982    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    6.2418   -5.5827    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  3  4  2  0  0  0  0\n  4  5  1  0  0  0  0\n  5  6  2  0  0  0  0\n  6  7  1  0  0  0  0\n  8  6  1  0  0  0  0\n  9  8  2  0  0  0  0\n  3  9  1  0  0  0  0\n  1 10  1  0  0  0  0\n 10 11  2  0  0  0  0\n 11 12  1  0  0  0  0\n 12 13  1  0  0  0  0\n 14 12  2  0  0  0  0\n 15 14  1  0  0  0  0\n  1 15  2  0  0  0  0\nM  END",
        "smiles": "c1cc(ccc1N)Nc2ccc(cc2)N",
        "formula": "C12H13N3",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "199.2522",
        "optical_activity": "NONE",
        "references": [
          "f450a32f-f1eb-483f-a03c-e859d0f56c5d",
          "77417bbc-65c6-4324-98aa-1c7431ef2d97"
        ],
        "stereo_centers": 0
      },
      "unii": "R24HL8M2C7"
    }
  ]
}