{
  "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": [
    {
      "polymer": {
        "uuid": "d499b358-7163-4150-8c13-2d784c3faa74",
        "classification": {
          "uuid": "783e426f-7ec6-4e52-b14a-6c14b0037c24",
          "polymer_class": "HOMOPOLYMER",
          "polymer_geometry": "LINEAR",
          "source_type": "SYNTHETIC"
        },
        "monomers": [
          {
            "uuid": "732ab34e-404f-4ebc-b838-269996c1cb13",
            "type": "MONOMER",
            "defining": false,
            "monomer_substance": {
              "uuid": "f5e552ba-3bcf-4591-af1a-4a2f04b550bc",
              "refuuid": "9d112338-2b42-40a2-8b54-632ac346b924",
              "name": "PROPYLENE",
              "linking_id": "AUG1H506LY",
              "ref_pname": "PROPYLENE",
              "substance_class": "reference",
              "unii": "AUG1H506LY"
            }
          }
        ],
        "references": [
          "9f7580a5-3ad1-913d-22cd-92ed9b85b1ec",
          "c772b96e-44b7-b5dc-58c5-f446bf324e76"
        ],
        "display_structure": {
          "id": "6af21515-c79d-4ec3-8a03-ac12f6952417",
          "molfile": "1-Propene\n  Marvin  01132103172D          \n\n  5  4  0  0  1  0            999 V2000\n   15.9860   -4.1388    0.0000 C   0  0  2  0  0  0  0  0  0  0  0  0\n   15.7196   -5.0018    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.7171   -4.0941    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.2214   -3.5092    0.0000 *   0  0  0  0  0  0  0  0  0  0  0  0\n   15.2556   -3.6520    0.0000 *   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  1  0  0  0\n  1  3  1  0  0  0  0\n  3  4  1  0  0  0  0\n  1  5  1  0  0  0  0\nM  STY  1   1 SRU\nM  SAL   1  3   1   2   3\nM  SDI   1  4   15.2996   -5.4218   15.2996   -3.6741\nM  SDI   1  4   17.1371   -3.6741   17.1371   -5.4218\nM  END",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ABSOLUTE",
          "defined_stereo": 1,
          "ez_centers": 0,
          "molecular_weight": 42.0799,
          "optical_activity": "NONE",
          "stereo_centers": 1
        },
        "idealized_structure": {
          "id": "3df58d8a-7228-4ad4-9d6e-c7c414b3ceb3",
          "molfile": "1-Propene\n  Marvin  01132103172D          \n\n  5  4  0  0  1  0            999 V2000\n   15.9860   -4.1388    0.0000 C   0  0  2  0  0  0  0  0  0  0  0  0\n   15.7196   -5.0018    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.7171   -4.0941    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.2214   -3.5092    0.0000 *   0  0  0  0  0  0  0  0  0  0  0  0\n   15.2556   -3.6520    0.0000 *   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  1  0  0  0\n  1  3  1  0  0  0  0\n  3  4  1  0  0  0  0\n  1  5  1  0  0  0  0\nM  STY  1   1 SRU\nM  SAL   1  3   1   2   3\nM  SDI   1  4   15.2996   -5.4218   15.2996   -3.6741\nM  SDI   1  4   17.1371   -3.6741   17.1371   -5.4218\nM  END",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ABSOLUTE",
          "references": [],
          "hash": "ICSUCTYSZZEBGP_GSVOUGTGSA_N",
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": 42.0799,
          "optical_activity": "NONE",
          "stereo_centers": 1
        }
      },
      "codes": [
        {
          "uuid": "0a7d105a-60ac-de5a-392a-616c3b393cf0",
          "code": "9003-07-0",
          "type": "GENERIC (FAMILY)",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=9003-07-0",
          "code_system": "CAS",
          "references": [
            "c772b96e-44b7-b5dc-58c5-f446bf324e76"
          ]
        },
        {
          "uuid": "64ff49ce-7dc0-4caa-9b3d-d4391a3e96d9",
          "code": "1ASA949VIC",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        }
      ],
      "substance_class": "polymer",
      "names": [
        {
          "uuid": "f8d2a0cd-a7bd-49f1-6b68-57cdcf91975b",
          "name": "ISOTACTIC POLYPROPYLENE (340000 MW, WEIGHT AVERAGE)",
          "stdName": "ISOTACTIC POLYPROPYLENE (340000 MW, WEIGHT AVERAGE)",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "9f7580a5-3ad1-913d-22cd-92ed9b85b1ec"
          ],
          "display_name": false
        },
        {
          "uuid": "53b07de7-eef1-827b-2717-277a3815eee3",
          "name": "ISOTACTIC POLYPROPYLENE (97000 MW, NUMBER AVERAGE)",
          "stdName": "ISOTACTIC POLYPROPYLENE (97000 MW, NUMBER AVERAGE)",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "9f7580a5-3ad1-913d-22cd-92ed9b85b1ec"
          ],
          "display_name": false
        },
        {
          "uuid": "b4f33223-45d0-5165-521c-dd7021267c74",
          "name": "POLYPROPYLENE (97000 MW)",
          "stdName": "POLYPROPYLENE (97000 MW)",
          "type": "cn",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "9f7580a5-3ad1-913d-22cd-92ed9b85b1ec"
          ],
          "display_name": true
        }
      ],
      "notes": [
        {
          "note": "This is an incomplete polymer record. A more detailed definition may be available soon.",
          "references": [],
          "uuid": null
        }
      ],
      "references": [
        {
          "uuid": "9f7580a5-3ad1-913d-22cd-92ed9b85b1ec",
          "citation": "POLYPROPYLENE",
          "url": "http://www.sigmaaldrich.com/catalog/substance/polypropylene12345900307011?lang=en&region=US",
          "doc_type": "SIGMA-ALDRICH",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "c772b96e-44b7-b5dc-58c5-f446bf324e76",
          "citation": "STN",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "definition_level": "INCOMPLETE",
      "uuid": "20fe4610-dcb0-4d6d-99a4-04531a2f8fff",
      "version": "9",
      "properties": [
        {
          "uuid": "b3c4ec44-c6cb-43a7-bdb6-d939418b4727",
          "name": "MOL_WEIGHT:NUMBER AVERAGE",
          "value": {
            "uuid": "76cc73e5-17d1-4dec-bcb6-73495a2533ca",
            "average": 97000,
            "units": "DALTONS"
          },
          "defining": true,
          "property_type": "PHYSICAL",
          "references": [
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        },
        {
          "uuid": "d4ff7fe8-8063-4ebb-b29f-2a62a7b8726f",
          "name": "MOL_WEIGHT:WEIGHT AVERAGE",
          "value": {
            "uuid": "673f4137-57e1-49f1-b238-41e60541172b",
            "average": 340000,
            "units": "DALTONS"
          },
          "defining": false,
          "property_type": "PHYSICAL",
          "references": [
            "9f7580a5-3ad1-913d-22cd-92ed9b85b1ec"
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        }
      ],
      "unii": "1ASA949VIC"
    }
  ]
}