Functional groups
Hydroxyl Group
(-OH)
--O--H
Carbonyl Group
(C==O)
O
||
C — C — R
Carboxyl Group
(-COOH)
O
||
— C — O — H
Amino Group
(-NH₂)
H
/
— N
\
H
Sulfhydryl group
(-SH)
-SH
Phosphate Group
(—OPO₃²⁻)
O
||
O — P — O
|
O
Methyl group
(-CH₃)
H
|
--C — H
|
H