@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .

nalt:1517
  skos:prefLabel "indoles"@es, "indoles"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:5998
  skos:prefLabel "bencimidazoles"@es, "benzimidazoles"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:313832
  skos:prefLabel "bases nitrogenadas"@es, "nucleobases"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:6719
  skos:prefLabel "pirimidinas"@es, "pyrimidines"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:31291
  skos:prefLabel "triacinas"@es, "triazines"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:25454
  skos:prefLabel "porfirinas"@es, "porphyrins"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:1546
  skos:prefLabel "quinolinas"@es, "quinolines"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:14329
  skos:prefLabel "azoles"@es, "azoles"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

<https://lod.nal.usda.gov/naltv#Chemical>
  rdfs:label "Chemical"@en ;
  a owl:Class .

nalt:7679
  skos:prefLabel "compuestos orgánicos del nitrógeno"@es, "organic nitrogen compounds"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:narrower nalt:3047 .

<https://lod.nal.usda.gov/nalt-core>
  rdfs:label "NALT Core"@es, "NALT Core"@en ;
  a skos:ConceptScheme .

nalt:6445
  skos:prefLabel "alcaloides"@es, "alkaloids"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:related nalt:3047 .

nalt:8044
  skos:prefLabel "penicilinas"@es, "penicillins"@en ;
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  skos:broader nalt:3047 .

nalt:3047
  skos:narrower nalt:25454, nalt:14308, nalt:1546, nalt:313832, nalt:8044, nalt:1517, nalt:6719, nalt:14329, nalt:1477, nalt:5998, nalt:31291 ;
  skos:hiddenLabel "heterocyclic-nitrogen-compounds"@en, "organonitrogen heterocyclic compound"@en, "organo-nitrogen heterocyclic compound"@en, "organo-nitrogen heterocyclic compounds"@en, "N-heterocycles"@en, "nitrogen heterocyclic"@en, "nitrogen heterocycle"@en, "N-heterocyclic"@en, "N-heterocycle"@en, "nitrogen heterocycles"@en ;
  skos:prefLabel "compuestos heterocíclicos nitrogenados"@es, "heterocyclic nitrogen compounds"@en ;
  skos:altLabel "organonitrogen heterocyclic compounds"@en ;
  skos:inScheme <https://lod.nal.usda.gov/nalt-core>, <https://lod.nal.usda.gov/nalt> ;
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Chemical> ;
  dc:modified "2018-10-02"^^xsd:date ;
  skos:related nalt:6445 ;
  skos:broader nalt:3817, nalt:7679 ;
  ns0:marc001 "18162" ;
  dc:created "2006-01-19"^^xsd:date .

nalt:3817
  skos:prefLabel "compuestos heterocíclicos"@es, "heterocyclic compounds"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:3047 .

nalt:14308
  skos:prefLabel "azinas"@es, "azines"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:3047 .

nalt:1477
  skos:prefLabel "piridinas"@es, "pyridines"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:3047 .