CH3-COOH

1. 1.CH3-COCl

1.1. CH3-CONHOH

1.2. CH3-CONH-NH2

2. 2.CH3-CN

2.1. CH3-C3H6NO

2.1.1. CH3-CNHNH2

2.1.2. CH3-(OC2H5)3

3. 3.CH3-COONH4

3.1. CH3-CONH2

4. 4.CH3-COONH3CH3

4.1. CH3-CONHCH3

5. 5.(CH3-COO)2

6. 6.CH3-COOC2H5