text: Ambergris is relatively nonreactive to acid. White crystals of a terpenoid known as ambrein, discovered by Leopold Ružička and Fernand Lardon in 1946, can be separated from ambergris by heating raw ambergris in alcohol, then allowing the resulting solution to cool. Breakdown of the relatively scentless ambrein through oxidation produces ambroxide and ambrinol, the main odor components of ambergris.
  Ambroxide is now produced synthetically and used extensively in the perfume industry.