1) Muskone 
The chemical structure of muscone was first elucidated by Lavoslav Ružička. It consists of a 15-membered ring ketone with one methyl substituent in the 3-position. It is an oily liquid that is found naturally as the (−)-enantiomer, (R)-3-methylcyclopentadecanone. Muscone has been synthesized as the pure (−)-enantiomer as well as the racemate...
(from the article `musk`) The odorous principle of musk is muscone (muskone), or 3-methylcyclopentadecanone. Muscone and other compounds that produce musk odour have been ... Ruika`s investigations of natural odoriferous compounds, begun in 1916, culminated in the discovery that the molecules of muskone and civetone, ... [2 related a...
muskone ... 
Type: Term Pronunciation: mŭs′kōn Definitions: 1. Muskone.
an oily, very slightly water-soluble, large cyclic ketone containing a 15-membered ring, CHO, obtained from musk: used in the perfume industry.