Smoke water
William Hoffmann (Thu, 13 Nov 2014 05:26:59 PST)

It should be mentioned that Karrikinolide is an alternate name that
was adopted for 3-methyl-2Hfuro[2,3-c]pyran-2-one

Confirmation of
the structure as the butenolide 3-methyl-2Hfuro[2,3-c]pyran-2-one
was achieved by synthesis.