PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 27136525-2 2016 Highly potent VEGFR-2 inhibitors 1 and 3 were caged by introduction of a photoremovable protecting group (PPG) to yield the caged prodrugs 4 and 5. ppg 106-109 kinase insert domain receptor Homo sapiens 14-21