Historical clue formulations

• Perfumery compound — 2018-06-15
• Perfumer's liquid — 2017-04-23
• Volatile solvent — 2005-07-14
• Perfume ingredient — 2004-03-27
• Compound used in perfume manufacture — 1998-05-30
• Hypnotic ingredient in medicine — 1995-01-29
• Solvent — 1994-10-12
• Alcohol solvent — 1994-04-09