{"id":"S94002476","label":"Mannich reaction","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh94002476","normalized_label":"mannich reaction","broader":["http://id.loc.gov/authorities/subjects/sh85022952"],"aliases":["Reaction, Mannich"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh94002476","provider":"lcsh","revision":"d64a458d60c6a811","taxonomy_revision":"f050b5d4780b1289","title":"Mannich reaction","url":"/topics/S94002476","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9567967794344363552","address_version":"morton4x16-v1","coordinates":[0,22,26996,45056],"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}