A
- abietinsyre
- absolutt alkohol
- acetal
- acetaldehyd
- acetamid
- acetanilid
- aceteddiksyre
- acetofenon
- aceton
- acetylen
- acetylklorid
- acyl
- adamantan
- adipinsyre
- agaricinsyre
- akridin
- akrolein
- akrylaldehyd
- akrylamid
- akrylsyre
- aldol
- alginsyre
- allylalkohol
- aluminiumacetat
- amidol
- aminobenzosyre
- ammoniumacetat
- amygdalin
- amylacetat
- amylformiat
- amylnitritt
- amylopektin
- amylose
- anetol
- angelikasyre
- anilin
- antracen
- antrakinon
- antranilsyre
- arabinose
- arbutin
- azobenzen