{
  "retrieved": "2026-10-11",
  "source_version": "256",
  "source_url": "https://ftp.ebi.ac.uk/pub/databases/chebi/ontology/chebi.obo.gz",
  "sha256": "485c2be9f74bb65153c74cb543147a212e129b6f72c6dfb5ec145d917e43aaeb",
  "total_source_terms": 219012,
  "scope": "All non-obsolete ChEBI 2-star and 3-star entries with formula, SMILES or valid CAS cross-reference; preferred names and EXACT and RELATED source synonyms; ignore leading punctuation and numeric locants, retain alphabetic stereochemical prefixes. One row per ChEBI ID.",
  "counts": {
    "a": {
      "total": 34112,
      "preferred": 17475,
      "synonym": 16637,
      "with_cas": 6699,
      "three_star": 13535,
      "matching_names": 55478
    },
    "b": {
      "total": 16977,
      "preferred": 9335,
      "synonym": 7642,
      "with_cas": 4612,
      "three_star": 7521,
      "matching_names": 28061
    },
    "c": {
      "total": 20145,
      "preferred": 14077,
      "synonym": 6068,
      "with_cas": 5402,
      "three_star": 7662,
      "matching_names": 32284
    },
    "d": {
      "total": 27987,
      "preferred": 15487,
      "synonym": 12500,
      "with_cas": 7117,
      "three_star": 11629,
      "matching_names": 49538
    },
    "e": {
      "total": 14997,
      "preferred": 6762,
      "synonym": 8235,
      "with_cas": 3622,
      "three_star": 4936,
      "matching_names": 22738
    },
    "f": {
      "total": 7522,
      "preferred": 4646,
      "synonym": 2876,
      "with_cas": 1779,
      "three_star": 2196,
      "matching_names": 10637
    },
    "g": {
      "total": 12960,
      "preferred": 5349,
      "synonym": 7611,
      "with_cas": 1679,
      "three_star": 4289,
      "matching_names": 19596
    },
    "h": {
      "total": 16951,
      "preferred": 8906,
      "synonym": 8045,
      "with_cas": 4229,
      "three_star": 7124,
      "matching_names": 26031
    },
    "i": {
      "total": 5264,
      "preferred": 3644,
      "synonym": 1620,
      "with_cas": 1795,
      "three_star": 2194,
      "matching_names": 8859
    },
    "j": {
      "total": 607,
      "preferred": 379,
      "synonym": 228,
      "with_cas": 173,
      "three_star": 172,
      "matching_names": 776
    },
    "k": {
      "total": 1949,
      "preferred": 1015,
      "synonym": 934,
      "with_cas": 651,
      "three_star": 949,
      "matching_names": 2791
    },
    "l": {
      "total": 11532,
      "preferred": 8133,
      "synonym": 3399,
      "with_cas": 2133,
      "three_star": 3987,
      "matching_names": 18521
    },
    "m": {
      "total": 19837,
      "preferred": 11396,
      "synonym": 8441,
      "with_cas": 5249,
      "three_star": 6491,
      "matching_names": 31546
    },
    "n": {
      "total": 35480,
      "preferred": 25591,
      "synonym": 9889,
      "with_cas": 5128,
      "three_star": 8792,
      "matching_names": 48387
    },
    "o": {
      "total": 11919,
      "preferred": 6186,
      "synonym": 5733,
      "with_cas": 2751,
      "three_star": 7240,
      "matching_names": 18793
    },
    "p": {
      "total": 21818,
      "preferred": 15739,
      "synonym": 6079,
      "with_cas": 5137,
      "three_star": 8719,
      "matching_names": 44262
    },
    "q": {
      "total": 676,
      "preferred": 503,
      "synonym": 173,
      "with_cas": 239,
      "three_star": 295,
      "matching_names": 1089
    },
    "r": {
      "total": 32570,
      "preferred": 12130,
      "synonym": 20440,
      "with_cas": 3801,
      "three_star": 7886,
      "matching_names": 41470
    },
    "s": {
      "total": 44817,
      "preferred": 17237,
      "synonym": 27580,
      "with_cas": 5306,
      "three_star": 10317,
      "matching_names": 59632
    },
    "t": {
      "total": 15901,
      "preferred": 11108,
      "synonym": 4793,
      "with_cas": 4298,
      "three_star": 5885,
      "matching_names": 27384
    },
    "u": {
      "total": 1417,
      "preferred": 862,
      "synonym": 555,
      "with_cas": 495,
      "three_star": 629,
      "matching_names": 2659
    },
    "v": {
      "total": 2477,
      "preferred": 1787,
      "synonym": 690,
      "with_cas": 720,
      "three_star": 710,
      "matching_names": 3530
    },
    "w": {
      "total": 643,
      "preferred": 305,
      "synonym": 338,
      "with_cas": 221,
      "three_star": 229,
      "matching_names": 927
    },
    "x": {
      "total": 872,
      "preferred": 580,
      "synonym": 292,
      "with_cas": 214,
      "three_star": 276,
      "matching_names": 1182
    },
    "y": {
      "total": 335,
      "preferred": 194,
      "synonym": 141,
      "with_cas": 108,
      "three_star": 152,
      "matching_names": 489
    },
    "z": {
      "total": 6655,
      "preferred": 2470,
      "synonym": 4185,
      "with_cas": 977,
      "three_star": 2975,
      "matching_names": 10853
    }
  },
  "unique_records": 201301,
  "letter_memberships": 366420,
  "indexable_pages": 3679
}