?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=C&rft.au=Picken%2C+C&rft.aulast=Picken&rft.atitle=Synthetic+routes+to+treprostinil+N-acyl+methylsulfonamide&rft.volume=61&rft.date=30+January+2020&rft.title=Tetrahedron+Letters&rft.issue=5&rft.genre=article