introduction
select molecule
random molecule
Select molecule
ump
uracil
urea
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
The molecular models in this page used under permission of copyright holder, Dr. Harry Ungar, Cabrillo College,
6500 Soquel Dr., Aptos, CA 95003. See:
http://c4.cabrillo.cc.ca.us
for more information.