7 Appendix
Table 26 (continued)
Amino acid
Carbamic acid
Carbazic acid
Allophanic acid
Hydantoic acid
Group name
Carbamoyl
Carbazoyl
Allophanoyl
Table 27. Lactones and lactams
o
II
H 2 C-C
. \
H2C, /0
C
H2
y-Butyrolactone
:/'" I c=o
00 ,
~
~
Coumarin
o
II
O-C
I
,
Me-CH
CH-Me
,
I
c-o
II
o
Dilactide
Me
I
HC-O
I
\
H2C, /C=O
C
H2
y-Valero lactone
Isocoumarin
Trisalicylide
Guanine( G) a
Formula
H2N-CO-1
H2N-NH-CO-1
H2N-CO-NH-CO-1
H2N-CO-NH -CHz-COOH
o
o
II
(X I C'o
~
/
C
H2
Phthalide
o
II
O
C,
I 0
~
2-Pyrone or
a-Pyrone
211
o
HN:),M'
O~N
o:rJ
H
H
Thymine(T)a
Uracil(U)a
a Letter symbols as used for representations of nucleic acids.