FUNCTIONAL GROUP

Double Bond:
Carbon double bond is present.
Class of Compound is Alkenes.
alkene

Carbonyl:
Class of compound is Ketone or Alkanoine.
Both sides of CO group contain alkyl group.
carbonyl

Marcapto:
Class of compound is Thioalcohol or Thiol.
thiol

Amino Group:
Class of compound is Amine.
Methylamine.svg

Triple Bond:
Carbon triple bond is present.
Class of compound is Alkynes.
alkyne

Halo(fluoro, chloro, bromo, iodo):
Class of compound is Alkyl halide.
Formula is -X, X can be Cl,F,I Br.
alkyl halide

Hydroxyl Group:
Class of compound is Alcohol or Alkanol.
alcohol

Imino Group:
Class of compound is Imine.
198px-Imine-(primary)-skeletal.svg

Acid Amide:
Class of compound is Acid Amide.
acid amide

Ether Linkage:
Class of compound is Ether.
ether

Formyl Group:
Class of compound is Aldehyde or Alkanal. formyl

Carboxyl Group:
Class of compound is Carboxylic Acid or Alkanoic Acid.
carboxylic

Ester Group:
Class of compound is Ester.
ester

Acid Halide:
Class of compound is Acid Halide.
acid halide

Carboxylic Acid Anhydride:
carboxylic Acid-Anhydride

Cyano:
Class of compound is Alkyl cyanide or Alkane nitrile.
cyano

Nitro:
Class of compound is Nitro Compounds.
nitro

Sulphide:
Dimethyl_sulfide_structure

Sulphoxide:
sulfoxide

Sulphone:
sulfone