PMC:7443692 / 59147-59244 JSONTXT

{"project":"LitCovid-sample-CHEBI","denotations":[{"id":"T396","span":{"begin":45,"end":57},"obj":"Chemical"},{"id":"T397","span":{"begin":66,"end":77},"obj":"Chemical"}],"attributes":[{"id":"A396","pred":"chebi_id","subj":"T396","obj":"http://purl.obolibrary.org/obo/CHEBI_38472"},{"id":"A397","pred":"chebi_id","subj":"T397","obj":"http://purl.obolibrary.org/obo/CHEBI_30751"}],"text":"min. The elution gradient consists of 1%–40% acetonitrile in 0.1% formic acid over 370 min follow"}