info:inchi/InChI=1/CH4/h1H4 InChI=1/CH4/h1H4 Chemical blogspace 297 methane http://chem-bla-ics.blogspot.com/2008/09/ubiquity-fun-entering-semantic-markup.html http://chem-bla-ics.blogspot.com/2007/09/tagging-molecules-mashup-of-connotea.html ChEBI CHEBI:16183 DBPedia NMRShiftDB 20029286