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

<https://lod.nal.usda.gov/naltv#marc001> rdfs:label "Field 001 in MARC Authority Format"@en .
<https://lod.nal.usda.gov/nalt>
  a skos:ConceptScheme ;
  rdfs:label "NALT Full"@en .

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

nalt:7890
  a <https://lod.nal.usda.gov/naltv#Chemical>, skos:Concept ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2013-04-02"^^xsd:date ;
  skos:broader nalt:3047 ;
  skos:exactMatch <http://id.loc.gov/authorities/subjects/sh85108545> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt> ;
  skos:narrower nalt:7889, nalt:10468, nalt:198409, nalt:17509, nalt:43995 ;
  skos:prefLabel "pteridinas"@es, "pteridines"@en ;
  ns0:marc001 "30912" .

nalt:7889
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:7890 ;
  skos:prefLabel "aminopterina"@es, "aminopterin"@en .

nalt:10468
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:7890 ;
  skos:prefLabel "metotrexato"@es, "methotrexate"@en .

nalt:198409
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:7890 ;
  skos:prefLabel "flavinas"@es, "flavins"@en .

nalt:17509
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:7890 ;
  skos:prefLabel "biopterin"@en, "biopterina"@es .

nalt:43995
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:7890 ;
  skos:prefLabel "neopterin"@en, "neopterina"@es .

nalt:3047
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:7890 ;
  skos:prefLabel "heterocyclic nitrogen compounds"@en, "compuestos heterocíclicos nitrogenados"@es .