{
"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",
"results": {
"skip": 0,
"limit": 1,
"total": 1
}
},
"results": [
{
"codes": [
{
"uuid": "1dc89122-f3c7-4976-89ce-dd74d3c56910",
"code": "53-70-3",
"type": "PRIMARY",
"url": "https://commonchemistry.cas.org/detail?cas_rn=53-70-3",
"code_system": "CAS",
"references": [
"83f2f57d-ab62-44b0-af63-8d3d970b01aa",
"bff97fe4-4283-43ca-8674-1958d7b94fb4"
]
},
{
"uuid": "332b1af5-c597-4b2e-aa4b-a4f66a2caabc",
"code": "C951",
"type": "PRIMARY",
"url": "https://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C951",
"code_system": "NCI_THESAURUS",
"references": [
"83f2f57d-ab62-44b0-af63-8d3d970b01aa"
]
},
{
"uuid": "b6496c83-4dda-41dd-848e-f2ce7dfd1cc6",
"code": "m4281",
"comments": "Merck Index",
"type": "PRIMARY",
"url": "https://merckindex.rsc.org/monographs/m4281?q=authorize",
"code_system": "MERCK INDEX",
"references": [
"83f2f57d-ab62-44b0-af63-8d3d970b01aa"
]
},
{
"uuid": "0f934b51-22e2-4663-ba7a-d24e94387686",
"code": "200-181-8",
"type": "PRIMARY",
"url": "https://echa.europa.eu/substance-information/-/substanceinfo/100.000.166",
"code_system": "ECHA (EC/EINECS)",
"references": [
"83f2f57d-ab62-44b0-af63-8d3d970b01aa"
]
},
{
"uuid": "762d6a56-b94d-43a4-8312-3b309ac53929",
"code": "5889",
"type": "PRIMARY",
"url": "https://pubchem.ncbi.nlm.nih.gov/compound/5889",
"code_system": "PUBCHEM",
"references": [
"83f2f57d-ab62-44b0-af63-8d3d970b01aa"
]
},
{
"uuid": "fe55c9fc-1b17-b1f2-58e8-d4f9a673dc49",
"code": "Dibenz(a,h)anthracene",
"type": "PRIMARY",
"url": "https://en.wikipedia.org/wiki/Dibenz(a,h)anthracene",
"code_system": "WIKIPEDIA",
"references": [
"da2335b8-a8e2-6e5e-3e32-38239e66ed2e"
]
},
{
"uuid": "12307f83-905e-4834-5c63-e69543d488d6",
"code": "5097",
"type": "PRIMARY",
"url": "https://pubchem.ncbi.nlm.nih.gov/source/hsdb/5097",
"code_system": "HSDB",
"references": [
"65b9bdcb-29bc-9496-dc1a-4287de231643"
]
},
{
"uuid": "e61d16eb-3fe0-c7ba-f3ab-7a478ee1f85b",
"code": "DTXSID9020409",
"type": "PRIMARY",
"url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID9020409",
"code_system": "EPA CompTox",
"references": [
"37a90783-8685-35ec-bdb7-1795f66d48a3"
]
},
{
"uuid": "1ba17fd9-5f16-fa37-e56a-9573176e398b",
"code": "Dibenz[a,h]anthracene",
"comments": "IARC|GROUP 2A (Probably carcinogenic to humans)",
"type": "PRIMARY",
"code_system": "IARC",
"references": [
"55701838-4695-8976-e134-c9bd4c11df1b"
]
},
{
"uuid": "549a5093-ee7a-4d48-a1dc-47d65a1c41b8",
"code": "T30ELH3D5X",
"type": "PRIMARY",
"code_system": "FDA UNII"
},
{
"uuid": "5de823b3-8e08-fce7-77bf-446e8a946eb6",
"code": "35299",
"type": "PRIMARY",
"url": "https://www.ebi.ac.uk/chebi/chebiOntology.do?chebiId=CHEBI:35299",
"code_system": "CHEBI",
"references": [
"44092190-f4fe-5be6-6bec-2b0460c18e94"
]
},
{
"uuid": "ac27c992-00d3-bcb9-6e20-558a0776b66c",
"code": "22433",
"type": "PRIMARY",
"url": "https://dtp.cancer.gov/dtpstandard/servlet/dwindex?searchtype=NSC&outputformat=html&searchlist=22433",
"code_system": "NSC",
"references": [
"d6bc3a15-5799-e854-013c-62a6c04b3940"
]
},
{
"uuid": "29ff2840-8d89-4e16-08f0-2bfecb198baf",
"code": "300000053251",
"type": "PRIMARY",
"code_system": "SMS_ID",
"references": [
"224babad-093d-6098-8655-d00065db6e41"
]
}
],
"substance_class": "chemical",
"names": [
{
"uuid": "bde1094f-b1a0-4847-aaeb-170dc3a336f2",
"name": "1,2,5,6-DBA",
"stdName": "1,2,5,6-DBA",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"2fca0677-c939-4bdd-afbf-16e7f535b69e",
"86636711-4df1-4ffe-ac4c-c95ddf2a667e"
],
"display_name": false
},
{
"uuid": "c4793946-22af-4c00-b472-b67f4c87869f",
"name": "1,2:5,6-BENZANTHRACENE",
"stdName": "1,2:5,6-BENZANTHRACENE",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"2fca0677-c939-4bdd-afbf-16e7f535b69e"
],
"display_name": false
},
{
"uuid": "8793aa21-038f-430c-b81a-29317d92180d",
"name": "1,2:5,6-DIBENZ(A)ANTHRACENE",
"stdName": "1,2:5,6-DIBENZ(A)ANTHRACENE",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"2fca0677-c939-4bdd-afbf-16e7f535b69e"
],
"display_name": false
},
{
"uuid": "26439e06-3b8f-47f6-b572-3021b62ccaf7",
"name": "1,2:5,6-DIBENZANTHRACENE",
"stdName": "1,2:5,6-DIBENZANTHRACENE",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"031caaf9-1f77-468e-ad8a-9df8b59a0e07",
"2fca0677-c939-4bdd-afbf-16e7f535b69e",
"bf92c396-08e8-4471-9c08-31e43ff32a58"
],
"display_name": false
},
{
"uuid": "30bd3e65-9e8e-42f6-b694-cdb496bf1cc0",
"name": "1,2:5,6-DIBENZANTHRACENE [MI]",
"stdName": "1,2:5,6-DIBENZANTHRACENE [MI]",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"2fca0677-c939-4bdd-afbf-16e7f535b69e",
"bf92c396-08e8-4471-9c08-31e43ff32a58"
],
"display_name": false
},
{
"uuid": "fde89b59-1939-4eaa-af98-acecc34abb89",
"name": "1,2:5,6-DIBENZOANTHRACENE",
"stdName": "1,2:5,6-DIBENZOANTHRACENE",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"2fca0677-c939-4bdd-afbf-16e7f535b69e"
],
"display_name": false
},
{
"uuid": "ad7f1ff1-fb84-4f7e-b1a0-a16a7af3252b",
"name": "DB(A,H)A",
"stdName": "DB(A,H)A",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"2fca0677-c939-4bdd-afbf-16e7f535b69e",
"86636711-4df1-4ffe-ac4c-c95ddf2a667e"
],
"display_name": false
},
{
"uuid": "ac3747e1-a1cc-4d23-81a2-05d4128a3df5",
"name": "DBA",
"stdName": "DBA",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"2fca0677-c939-4bdd-afbf-16e7f535b69e"
],
"display_name": false
},
{
"uuid": "d33a0b36-128a-4582-a539-e587efa349c6",
"name": "DIBENZ(A,H)ANTHRACENE",
"stdName": "DIBENZ(A,H)ANTHRACENE",
"type": "sys",
"languages": [
"en"
],
"preferred": false,
"references": [
"bfd849a3-018d-4878-b6ab-587a17edd9ee",
"2fca0677-c939-4bdd-afbf-16e7f535b69e",
"b27e7aa6-8726-474e-bce2-fa66842e135f",
"86636711-4df1-4ffe-ac4c-c95ddf2a667e"
],
"display_name": true
},
{
"uuid": "bad130e4-2e7d-4fd1-a413-a06471ee3e50",
"name": "DIBENZ(A,H)ANTHRACENE [HSDB]",
"stdName": "DIBENZ(A,H)ANTHRACENE [HSDB]",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"2fca0677-c939-4bdd-afbf-16e7f535b69e",
"b27e7aa6-8726-474e-bce2-fa66842e135f"
],
"display_name": false
},
{
"uuid": "75e2ca34-14e8-bbf6-6aa8-6e230ac679e8",
"name": "DIBENZ(A,H)ANTHRACENE [IARC]",
"stdName": "DIBENZ(A,H)ANTHRACENE [IARC]",
"type": "cn",
"languages": [
"en"
],
"preferred": false,
"references": [
"55701838-4695-8976-e134-c9bd4c11df1b"
],
"display_name": false
},
{
"uuid": "6c5f4261-16ad-476b-9b66-91f32fad8e09",
"name": "DIBENZO(A,H)ANTHRACENE",
"stdName": "DIBENZO(A,H)ANTHRACENE",
"type": "sys",
"languages": [
"en"
],
"preferred": false,
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"2fca0677-c939-4bdd-afbf-16e7f535b69e"
],
"display_name": false
},
{
"uuid": "fb847755-d4a5-47e8-ba9c-75a705926a59",
"name": "NSC-22433",
"stdName": "NSC-22433",
"type": "cd",
"languages": [
"en"
],
"preferred": false,
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"2fca0677-c939-4bdd-afbf-16e7f535b69e"
],
"display_name": false
}
],
"references": [
{
"uuid": "86636711-4df1-4ffe-ac4c-c95ddf2a667e",
"citation": "CHEMID",
"doc_type": "SRS",
"public_domain": true,
"tags": [
"NOMEN",
"PUBLIC_DOMAIN_RELEASE",
"AUTO_SELECTED"
]
},
{
"uuid": "2fca0677-c939-4bdd-afbf-16e7f535b69e",
"citation": "CHEMID",
"doc_type": "CHEMID",
"public_domain": true,
"tags": [
"NOMEN"
]
},
{
"uuid": "5033baad-ad77-48fb-bdf1-aa10d3087395",
"citation": "STN",
"doc_type": "SRS",
"public_domain": true,
"tags": [
"NOMEN"
]
},
{
"uuid": "b27e7aa6-8726-474e-bce2-fa66842e135f",
"citation": "HSDB",
"doc_type": "SRS",
"public_domain": true,
"tags": [
"NOMEN"
]
},
{
"uuid": "bf92c396-08e8-4471-9c08-31e43ff32a58",
"citation": "MERCK",
"doc_type": "SRS",
"public_domain": true,
"tags": [
"NOMEN"
]
},
{
"uuid": "83f2f57d-ab62-44b0-af63-8d3d970b01aa",
"citation": "SRS CODE IMPORT",
"doc_type": "SRS",
"public_domain": true,
"document_date": 1493391328000,
"tags": [
"NOMEN"
]
},
{
"uuid": "1c59e196-4220-4edf-b76c-1cdd9fbe986f",
"citation": "IARC CARCINOGENS REPORTED IN CIGARETTE MAINSTREAM SMOKE AND THEIR CALCULATED LOG P VALUES; SMITH, CJ; FOOD AND CHEMICAL TOXICOLOGY, 41(6), 807?817, JUNE 2003",
"url": "http://www.sciencedirect.com/science/article/pii/S0278691503000218",
"doc_type": "JOURNAL ARTICLE",
"public_domain": true,
"tags": [
"NOMEN"
]
},
{
"uuid": "c1eb304a-d272-4fc0-943c-f0acebcce0ed",
"citation": "SRS import [T30ELH3D5X]",
"url": "http://fdasis.nlm.nih.gov/srs/srsdirect.jsp?regno=T30ELH3D5X",
"doc_type": "SRS",
"public_domain": true,
"document_date": 1493391328000,
"tags": [
"NOMEN"
]
},
{
"uuid": "bfd849a3-018d-4878-b6ab-587a17edd9ee",
"citation": "DIBENZ(A,H)ANTHRACENE [HSDB]",
"doc_type": "SRS_LOCATOR",
"public_domain": true
},
{
"uuid": "031caaf9-1f77-468e-ad8a-9df8b59a0e07",
"citation": "1,2:5,6-DIBENZANTHRACENE [MI]",
"doc_type": "SRS_LOCATOR",
"public_domain": true
},
{
"uuid": "da2335b8-a8e2-6e5e-3e32-38239e66ed2e",
"citation": "WIKI",
"url": "https://en.wikipedia.org/wiki/Dibenz(a,h)anthracene",
"doc_type": "WIKI",
"public_domain": true,
"tags": [
"NOMEN",
"PUBLIC_DOMAIN_RELEASE"
]
},
{
"uuid": "65b9bdcb-29bc-9496-dc1a-4287de231643",
"citation": "WEBSITE",
"url": "https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb:@term+@rn+@rel+53-70-3",
"doc_type": "WEBSITE",
"public_domain": true,
"tags": [
"NOMEN",
"PUBLIC_DOMAIN_RELEASE"
]
},
{
"uuid": "37a90783-8685-35ec-bdb7-1795f66d48a3",
"citation": "WEBSITE",
"url": "https://comptox.epa.gov/dashboard/dsstoxdb/results?utf8=%E2%9C%93&search=53-70-3",
"doc_type": "WEBSITE",
"public_domain": true,
"tags": [
"NOMEN",
"PUBLIC_DOMAIN_RELEASE"
]
},
{
"uuid": "55701838-4695-8976-e134-c9bd4c11df1b",
"citation": "IARC",
"doc_type": "IARC",
"public_domain": true
},
{
"uuid": "44092190-f4fe-5be6-6bec-2b0460c18e94",
"doc_type": "SYSTEM",
"public_domain": true
},
{
"uuid": "d6bc3a15-5799-e854-013c-62a6c04b3940",
"citation": "NCI",
"doc_type": "NCI DRUG DICTIONARY",
"public_domain": true
},
{
"uuid": "bff97fe4-4283-43ca-8674-1958d7b94fb4",
"citation": "STN",
"doc_type": "STN (SCIFINDER)",
"public_domain": true
},
{
"uuid": "224babad-093d-6098-8655-d00065db6e41",
"citation": "SMS",
"doc_type": "EMA LIST",
"public_domain": true
}
],
"definition_type": "PRIMARY",
"moieties": [
{
"uuid": "d3bbc37b-8b15-477d-a330-3dca0f59b6b0",
"id": "d3bbc37b-8b15-477d-a330-3dca0f59b6b0",
"molfile": "\n Marvin 01132110572D \n\n 22 26 0 0 0 0 999 V2000\n 4.1792 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 4.5910 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.4192 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.8311 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.4192 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 4.5910 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.8311 -2.1446 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 6.6548 -2.1446 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.0667 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.8903 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 8.3021 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.8903 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 8.3021 -4.9992 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.1258 -4.9992 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.5377 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 10.3660 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 10.7778 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 10.3660 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.5377 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.1258 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.0667 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 6.6548 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 2 1 1 0 0 0 0\n 1 6 2 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 4 22 1 0 0 0 0\n 6 5 1 0 0 0 0\n 5 7 1 0 0 0 0\n 7 8 2 0 0 0 0\n 8 9 1 0 0 0 0\n 9 10 1 0 0 0 0\n 22 9 2 0 0 0 0\n 10 11 2 0 0 0 0\n 12 11 1 0 0 0 0\n 20 11 1 0 0 0 0\n 13 12 1 0 0 0 0\n 21 12 2 0 0 0 0\n 13 14 2 0 0 0 0\n 14 15 1 0 0 0 0\n 16 15 1 0 0 0 0\n 15 20 2 0 0 0 0\n 17 16 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 22 21 1 0 0 0 0\nM END",
"smiles": "c1ccc2c(c1)ccc3cc4c(ccc5ccccc54)cc32",
"formula": "C22H14",
"atropisomerism": "No",
"charge": 0,
"count": 1,
"stereochemistry": "ACHIRAL",
"count_amount": {
"type": "MOL RATIO",
"average": 1,
"units": "MOL RATIO",
"uuid": "24189e06-2610-48d7-aeff-0b811a7da7a5"
},
"defined_stereo": 0,
"ez_centers": 0,
"molecular_weight": "278.3474",
"optical_activity": "NONE",
"stereo_centers": 0
}
],
"definition_level": "COMPLETE",
"uuid": "df4a2022-f3ac-4e09-b5b9-55973f23881f",
"version": "11",
"structure": {
"id": "ab02b4f9-fd7e-45b2-8242-1705ed095477",
"molfile": "\n Marvin 01132108522D \n\n 22 26 0 0 0 0 999 V2000\n 8.3021 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.8903 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.0667 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 6.6548 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.0667 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 7.8903 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 6.6548 -2.1446 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.8311 -2.1446 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.4192 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 4.5910 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 4.1792 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 4.5910 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.4192 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 5.8311 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 8.3021 -4.9992 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.1258 -4.9992 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.5377 -4.2890 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.1258 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 9.5377 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 10.3660 -2.8592 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 10.7778 -3.5742 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0\n 10.3660 -4.2890 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 2 0 0 0 0\n 4 3 1 0 0 0 0\n 4 5 2 0 0 0 0\n 5 6 1 0 0 0 0\n 6 1 2 0 0 0 0\n 7 5 1 0 0 0 0\n 8 7 2 0 0 0 0\n 9 8 1 0 0 0 0\n 10 9 2 0 0 0 0\n 11 10 1 0 0 0 0\n 12 11 2 0 0 0 0\n 12 13 1 0 0 0 0\n 13 14 2 0 0 0 0\n 14 4 1 0 0 0 0\n 14 9 1 0 0 0 0\n 15 2 1 0 0 0 0\n 15 16 2 0 0 0 0\n 16 17 1 0 0 0 0\n 17 18 1 0 0 0 0\n 18 1 1 0 0 0 0\n 19 18 2 0 0 0 0\n 20 19 1 0 0 0 0\n 21 20 2 0 0 0 0\n 21 22 1 0 0 0 0\n 22 17 2 0 0 0 0\nM END",
"smiles": "c1ccc2c(c1)ccc3cc4c(ccc5ccccc54)cc32",
"formula": "C22H14",
"atropisomerism": "No",
"charge": 0,
"count": 1,
"stereochemistry": "ACHIRAL",
"defined_stereo": 0,
"ez_centers": 0,
"molecular_weight": "278.3474",
"optical_activity": "NONE",
"references": [
"5033baad-ad77-48fb-bdf1-aa10d3087395",
"c1eb304a-d272-4fc0-943c-f0acebcce0ed"
],
"stereo_centers": 0
},
"unii": "T30ELH3D5X"
}
]
}