(2-oxopropionyl)oxy butanoic acid
3,4-dioxo 4-methoxy butanoic acid
3-(2-oxopropyl),6-oxo heptanoic acid
3-propionyl,6-oxo heptanoic acid
3-(3-oxobutyl),6-oxo hexanoic acid
Aldehyde takes priority over ketone, yes?
Have I got these right?
PS: With the third molecule, wouldn't it be convenient if we could have a ketonyl group so that instead of 2-oxopropyl , one could say propanonyl?