Definition of Xanthine
Xan´thine
n.
1.
(Physiol. Chem.)
A
type
of
purine
obtainable
as
a
white
microcrystalline
powder
,
C5H4O2N4
,
present
in
muscle
tissue
,
in
the
liver
,
spleen
,
pancreas
,
and
other
organs
,
and
also
in
urine
(
in
small
quantities
)
and
some
urinary
calculi
,
and
in
the
juices
of
certain
plants
; -
so
called
because
it
leaves
a
yellow
residue
when
evaporated
to
dryness
with
nitric
acid
.
It
is
also
present
in
guano
.
Xanthine
is
closely
related
to
uric
acid
.
Related Words
organic
compound
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