?url_ver=Z39.88-2004&rft_id=10.14233%2Fajchem.2014.16008&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Khan%2C+I.U.&rft.aulast=Khan&rft.aufirst=I.U.&rft.date=2014&rft.title=Asian+Journal+of+Chemistry&rft.atitle=Asperal%3A+A+new+clerodane+diterpene+from+sonchus+asper&rft.pages=2699-2701&rft.issue=9&rft.volume=26&rft.issn=09707077&rft.genre=article