{
  "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": "f4969f87-2934-4e81-9bfd-7f9bfc10b9cf",
        "classification": {
          "uuid": "6da05515-6927-4021-86a7-450d790f9a8d",
          "polymer_class": "HOMOPOLYMER",
          "polymer_geometry": "LINEAR"
        },
        "monomers": [
          {
            "uuid": "eee3923b-92f5-4cf1-bd6c-eaa29ebfa21c",
            "type": "MONOMER",
            "defining": false,
            "monomer_substance": {
              "uuid": "8bc25754-0e8d-4bde-a39b-f904895b782a",
              "refuuid": "e86b6ffd-b009-4d29-a2fd-c10b944f4ece",
              "name": "LYSINE",
              "linking_id": "K3Z4F929H6",
              "ref_pname": "LYSINE",
              "substance_class": "reference",
              "unii": "K3Z4F929H6"
            }
          }
        ],
        "references": [
          "14a4f900-925b-9405-04bb-1e5784528267",
          "31f7a7f3-92f6-a16a-e977-f0b077ace0c0",
          "3d5b7f2c-de44-c364-d22c-b15c256281bd"
        ],
        "display_structure": {
          "id": "4548e544-b9ef-4464-aad6-ee11328cfc9e",
          "molfile": "L-Lysine\n  Marvin  01132101032D          \n\n 28 27  0  0  1  0            999 V2000\n   14.6690   -2.8807    0.0000 C   0  0  2  0  0  0  0  0  0  0  0  0\n   14.6449   -3.7053    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   13.9670   -2.4474    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.9911   -1.6227    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   15.3953   -2.4893    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.0973   -2.9226    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.8236   -2.5311    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.5256   -2.9644    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   18.2519   -2.5729    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   11.3432   -3.0864    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   11.3191   -3.9110    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.5928   -4.3023    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.5687   -5.1271    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.8425   -5.5184    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.3900   -6.3012    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0922   -6.7345    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.5204   -6.7762    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    9.8184   -6.3430    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0\n   23.0501   -7.4946    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   22.3481   -7.0615    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   22.3723   -6.2368    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.6702   -5.8037    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.6942   -4.9790    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.7426   -3.3297    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   21.0164   -3.7212    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   20.2660   -4.9371    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   20.9922   -4.5458    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0\n    9.0680   -7.5590    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  6  0  0  0\n  1  3  1  0  0  0  0\n  3  4  2  0  0  0  0\n  1  5  1  0  0  0  0\n  5  6  1  0  0  0  0\n  6  7  1  0  0  0  0\n  7  8  1  0  0  0  0\n  8  9  1  0  0  0  0\n 11 10  1  0  0  0  0\n 12 11  1  0  0  0  0\n 13 12  1  0  0  0  0\n 14 13  1  0  0  0  0\n 18 14  1  0  0  0  0\n 16 15  2  0  0  0  0\n 18 16  1  0  0  0  0\n 18 17  1  6  0  0  0\n  3 10  1  0  0  0  0\n 20 19  1  0  0  0  0\n 21 20  1  0  0  0  0\n 22 21  1  0  0  0  0\n 23 22  1  0  0  0  0\n 27 23  1  0  0  0  0\n 25 24  2  0  0  0  0\n 27 25  1  0  0  0  0\n 27 26  1  6  0  0  0\n 25  9  1  0  0  0  0\n 16 28  1  0  0  0  0\nM  STY  1   1 SRU\nM  SAL   1  9   1   2   3   4   5   6   7   8   9\nM  SDI   1  4   13.5470   -4.1253   13.5470   -1.2027\nM  SDI   1  4   18.6719   -1.2027   18.6719   -4.1253\nM  END",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ABSOLUTE",
          "defined_stereo": 3,
          "ez_centers": 0,
          "molecular_weight": 402.5328,
          "optical_activity": "UNSPECIFIED",
          "stereo_centers": 3
        },
        "idealized_structure": {
          "id": "0fa7403c-bf9f-4f61-bee5-69a49870b283",
          "molfile": "L-Lysine\n  Marvin  01132101032D          \n\n 28 27  0  0  1  0            999 V2000\n   14.6690   -2.8807    0.0000 C   0  0  2  0  0  0  0  0  0  0  0  0\n   14.6449   -3.7053    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   13.9670   -2.4474    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.9911   -1.6227    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   15.3953   -2.4893    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.0973   -2.9226    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.8236   -2.5311    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.5256   -2.9644    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   18.2519   -2.5729    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   11.3432   -3.0864    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   11.3191   -3.9110    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.5928   -4.3023    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.5687   -5.1271    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    9.8425   -5.5184    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    8.3900   -6.3012    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n    9.0922   -6.7345    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.5204   -6.7762    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    9.8184   -6.3430    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0\n   23.0501   -7.4946    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   22.3481   -7.0615    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   22.3723   -6.2368    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.6702   -5.8037    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.6942   -4.9790    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   21.7426   -3.3297    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   21.0164   -3.7212    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   20.2660   -4.9371    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   20.9922   -4.5458    0.0000 C   0  0  1  0  0  0  0  0  0  0  0  0\n    9.0680   -7.5590    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  6  0  0  0\n  1  3  1  0  0  0  0\n  3  4  2  0  0  0  0\n  1  5  1  0  0  0  0\n  5  6  1  0  0  0  0\n  6  7  1  0  0  0  0\n  7  8  1  0  0  0  0\n  8  9  1  0  0  0  0\n 11 10  1  0  0  0  0\n 12 11  1  0  0  0  0\n 13 12  1  0  0  0  0\n 14 13  1  0  0  0  0\n 18 14  1  0  0  0  0\n 16 15  2  0  0  0  0\n 18 16  1  0  0  0  0\n 18 17  1  6  0  0  0\n  3 10  1  0  0  0  0\n 20 19  1  0  0  0  0\n 21 20  1  0  0  0  0\n 22 21  1  0  0  0  0\n 23 22  1  0  0  0  0\n 27 23  1  0  0  0  0\n 25 24  2  0  0  0  0\n 27 25  1  0  0  0  0\n 27 26  1  6  0  0  0\n 25  9  1  0  0  0  0\n 16 28  1  0  0  0  0\nM  STY  1   1 SRU\nM  SAL   1  9   1   2   3   4   5   6   7   8   9\nM  SDI   1  4   13.5470   -4.1253   13.5470   -1.2027\nM  SDI   1  4   18.6719   -1.2027   18.6719   -4.1253\nM  END",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "ABSOLUTE",
          "references": [],
          "defined_stereo": 3,
          "ez_centers": 0,
          "molecular_weight": 402.5328,
          "optical_activity": "UNSPECIFIED",
          "stereo_centers": 3
        }
      },
      "codes": [
        {
          "uuid": "35587fb4-2961-48eb-b745-f6928ef136e5",
          "code": "28211-04-3",
          "type": "PRIMARY",
          "url": "https://commonchemistry.cas.org/detail?cas_rn=28211-04-3",
          "code_system": "CAS",
          "references": [
            "3d5b7f2c-de44-c364-d22c-b15c256281bd"
          ]
        },
        {
          "uuid": "94a5b849-faf3-88ec-65f0-3fc3f3c484fc",
          "code": "1996987",
          "type": "PRIMARY",
          "url": "https://rxnav.nlm.nih.gov/REST/rxcui/1996987/allProperties.xml?prop=all",
          "code_system": "RXCUI",
          "references": [
            "b1b93b7d-9c4b-756c-a997-7c0b74f5235f"
          ]
        },
        {
          "uuid": "46ac3179-4795-c217-d9e2-c7d3830f115b",
          "code": "DTXSID401042297",
          "type": "PRIMARY",
          "url": "https://comptox.epa.gov/dashboard/chemical/details/DTXSID401042297",
          "code_system": "EPA CompTox"
        },
        {
          "uuid": "04b60f60-ac4e-4f5b-bcb8-dc9262a356e2",
          "code": "WB0M8X4TWR",
          "type": "PRIMARY",
          "code_system": "FDA UNII"
        },
        {
          "uuid": "5d71f68a-948e-c20f-2a67-e4edb9a44ea3",
          "code": "WB0M8X4TWR",
          "type": "PRIMARY",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?adv=1&query=WB0M8X4TWR",
          "code_system": "DAILYMED",
          "references": [
            "19b26413-e7ca-2668-5181-ab81de2c205d"
          ]
        }
      ],
      "substance_class": "polymer",
      "names": [
        {
          "uuid": "5e967e8f-757a-a26d-8a67-e173d56c211a",
          "name": ".EPSILON.-POLYLYSINE (4000 MW)",
          "stdName": ".EPSILON.-POLYLYSINE (4000 MW)",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "8451bfae-7baa-9e54-6dcd-9636054bdf12"
          ],
          "display_name": false
        },
        {
          "uuid": "3793a09d-8c9b-b758-aab2-684c4ed974bf",
          "name": "POLY(.EPSILON.-LYSINE) (4000 MW)",
          "stdName": "POLY(.EPSILON.-LYSINE) (4000 MW)",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "9f1ec942-625a-6851-582e-82857039a864"
          ],
          "display_name": false
        },
        {
          "uuid": "01edb720-1c8b-866f-f21b-0815a4c204a2",
          "name": "POLY(IMINO((2S)-2-AMINO-1-OXO-1,6-HEXANEDIYL)) (4000 MW)",
          "stdName": "POLY(IMINO((2S)-2-AMINO-1-OXO-1,6-HEXANEDIYL)) (4000 MW)",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "9f1ec942-625a-6851-582e-82857039a864"
          ],
          "display_name": false
        },
        {
          "uuid": "2180248e-5c1e-6012-1f04-379a14f5a79a",
          "name": "POLYEPSILON-LYSINE (4000 MW)",
          "stdName": "POLYEPSILON-LYSINE (4000 MW)",
          "type": "sys",
          "languages": [
            "en"
          ],
          "preferred": false,
          "references": [
            "14a4f900-925b-9405-04bb-1e5784528267"
          ],
          "display_name": true
        }
      ],
      "notes": [
        {
          "note": "This is an incomplete polymer record. A more detailed definition may be available soon.",
          "references": [],
          "uuid": null
        }
      ],
      "references": [
        {
          "uuid": "9f1ec942-625a-6851-582e-82857039a864",
          "citation": "FDA_SRS",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "8451bfae-7baa-9e54-6dcd-9636054bdf12",
          "citation": "Polylysine",
          "url": "https://en.wikipedia.org/wiki/Polylysine",
          "doc_type": "WIKI",
          "public_domain": true
        },
        {
          "uuid": "bc80417b-ca5c-348f-014f-54d6a166a432",
          "citation": "PCPC",
          "doc_type": "PERSONAL CARE PRODUCTS COUNCIL",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE",
            "NOMEN"
          ]
        },
        {
          "uuid": "3d5b7f2c-de44-c364-d22c-b15c256281bd",
          "citation": "Scifinder Commercial Sources",
          "doc_type": "STN (SCIFINDER)",
          "public_domain": true
        },
        {
          "uuid": "31f7a7f3-92f6-a16a-e977-f0b077ace0c0",
          "url": "https://www.fda.gov/downloads/Food/IngredientsPackagingLabeling/GRAS/NoticeInventory/ucm267372.pdf",
          "doc_type": "WEB PAGE",
          "public_domain": true
        },
        {
          "uuid": "14a4f900-925b-9405-04bb-1e5784528267",
          "citation": "FDA_SRS",
          "doc_type": "PERSONAL CARE PRODUCTS COUNCIL",
          "public_domain": true,
          "tags": [
            "PUBLIC_DOMAIN_RELEASE"
          ]
        },
        {
          "uuid": "b1b93b7d-9c4b-756c-a997-7c0b74f5235f",
          "citation": "RXNORM",
          "doc_type": "NLM",
          "public_domain": true
        },
        {
          "uuid": "19b26413-e7ca-2668-5181-ab81de2c205d",
          "citation": "DailyMed",
          "doc_type": "DAILYMED",
          "public_domain": true
        },
        {
          "uuid": "40398111-16d4-073b-b729-a1eab4965662",
          "citation": "STARI",
          "doc_type": "CFSAN",
          "public_domain": true
        }
      ],
      "definition_type": "PRIMARY",
      "definition_level": "INCOMPLETE",
      "uuid": "ed574cda-e6c6-4ec8-9e85-c6b1040ff28e",
      "version": "9",
      "properties": [
        {
          "uuid": "f636b86f-f177-48e3-95da-1883419f3621",
          "name": "MOL_WEIGHT:NUMBER(CALCULATED)",
          "value": {
            "uuid": "eab32fa6-c2cc-4d0c-96df-1b4136756f12",
            "average": 4000,
            "high": 4500,
            "low": 3500,
            "units": "DALTONS"
          },
          "defining": true,
          "property_type": "PHYSICAL",
          "references": [
            "3d5b7f2c-de44-c364-d22c-b15c256281bd"
          ]
        }
      ],
      "unii": "WB0M8X4TWR"
    }
  ]
}