acyl group
moiety derived by the removal of one or more hydroxyl groups from an oxoacid (organic or inorganic)
sulfonyl group
any functional group having a sulfur atom doubly-bonded to two oxygen atoms
acyl cyanide
class of chemical compounds
nitro group
functional group
sulfinyl
functional group consisting of sulfur double-bonded to oxygen
cyano group
functional group, –C≡N
carbonyl
divalent functional group (>C=O)