Canna~Fangled Abstracts Identification and quantification of cannabinol as a biomarker for local hemp retting in an ancient sedimentary record by HPTLC-ESI-MS. Anal Bioanal Chem. 2020 Feb 14. doi: 10.1007/s00216-020-02492-0. Schmidt T1, Kramell AE2, Oehler F3, Kluge…Freedom WaresFebruary 14, 2020