Historical clue formulations

• Biochemical sugar — 2014-12-11
• Biochemical sugar — 2010-05-30
• Adenosine component — 2006-10-21
• Five-carbon sugar — 2006-01-22
• Nucleic acid sugar — 2005-10-18
• Biochemical sugar — 2005-07-24
• RNA sugar — 1997-11-09