A
- abietinsyre
- absolutt alkohol
- acetal
- acetaldehyd
- acetaler
- acetamid
- acetanilid
- acetater
- acetofenon
- aceton
- acetyl
- acetylen
- acetylklorid
- acyl
- adamantan
- adipinsyre
- agaricinsyre
- akridin
- akrolein
- akrylaldehyd
- akrylamid
- akrylsyre
- aldehyder
- aldol
- aldoser
- algin
- alginater
- alginsyre
- alifatiske forbindelser
- alisykliske forbindelser
- alizaron
- alkaner
- alkener
- alkoholar – kjemi
- alkoholater
- alkoholradikal
- alkoholtermometer
- alkoholyse
- alkyl
- alkylcyanid
- alkylhalogenid
- alkylmagnesiumhalogenid
- alkyner
- allylalkohol
- aluminiumacetat
- ambra
- amider
- amidol
- aminer
- aminoalkoholer
- aminobenzen
- aminobenzosyre
- amygdalin
- amyl
- amylacetat
- amylalkohol
- amylformiat
- amylnitritt
- amylose
- anetol
- angelikasyre
- anilider
- anilin
- anisoler
- anisolje
- antracen
- antracenolje
- antrakinon
- antranilsyre
- apiezon
- arabinose
- arabisk gummi
- arbutin
- aromat
- aromatiske forbindelser
- arsin (SML)
- arsiner
- aryl
- askorbat
- aziner
- azobenzen
- azoforbindelser
- azoler