3d image of butyne skeletal formula

butyne gas alkyne metathesis formaldehyde hydrogenation condensation isomer stereoisomer orbital structure activity relationship sar racemate substance matter material compound component agent stuff reagent functional group precursor synthesis reaction production building block molecule molecular formula skeletal structural structure chemistry science scientific research organic chemical 2-butyne dimethylacetylene crotonylene but-2-yne alkyne rearrangement alkylated hydroquinones propyne total vitamin 3d