Carbonyl aldenydes
O
//
-C
\
HHydroxyl group
-OH
Carbonyl ketones
O
| |
- C -
Carboxyl groups
O
//
C
\
OHAmino group
H
/
N
\
H**Phosphate
O
| |
O(neg)=P - O(neg)
|
O(neg)**Sulfhydryl
SH