{"id":"S87001468","label":"Butyl methyl ether","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh87001468","normalized_label":"butyl methyl ether","broader":["http://id.loc.gov/authorities/subjects/sh85045081"],"aliases":["Butane, Methoxy","MTBE (Chemical)","MTBT (Chemical)","Methoxy butane","Methyl tertiary butyl ether","Methyl-tert-butyl ether"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh87001468","provider":"lcsh","revision":"2f92d06bd88982ba","taxonomy_revision":"f050b5d4780b1289","title":"Butyl methyl ether","url":"/topics/S87001468","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14469014744507483652","address_version":"morton4x16-v1","coordinates":[0,20,48677,61440],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}