5O

5O or 5-O may refer to:

• ASL Airlines France (IATA airline code: 5O)
• 5-O-caffeoylquinic acid, see Chlorogenic acid
• 5-O-(4-coumaroyl)-D-quinate 3'-monooxygenase
• 5-O-Methylations
• Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
• Anthocyanin 5-O-glucoside 6-O-malonyltransferase
• a slang term for a Ford Mustang GT automobile with a 5.0 L engine
• 5.0, 2010 album by Nelly

See also

• Five-O (disambiguation)
• O5 (disambiguation)
• 50 (disambiguation)