Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleMarrubiin, a Diterpenoid Lactone.AuthorsHOLLIS, FREDA; RICHARDS, J. H.; ROBERTSON, A.AbstractACCORDING to Gordin1, marrubiin, the optically active bitter principle of Marrubium vulgare, is a lactone, C21H28O4, m.p. 154.5°-155.5°, which on hydrolysis yields marrubic acid, C21H30O5, m.p. 173°-174°, forming an ethyl ester, m.p. 87°.PublicationNature, 1939, Vol 143, Issue 3623, p604ISSN0028-0836Publication typeArticleDOI10.1038/143604b0