PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28473879-3 2017 Thus, tested DHPs belong to three groups: (1) antioxidant diludine; (2) derivatives with pyridinium moieties at position 4 of the 1,4-DHP ring; (3) DHPs containing cationic methylene onium (pyridinium, trialkylammonium) moieties at positions 2 and 6 of the 1,4-DHP ring. etidin 58-66 dihydropyrimidinase Homo sapiens 13-16