-
Chelidonic acid is a
heterocyclic organic acid with a
pyran skeleton.
Chelidonic acid can be
prepared in two
steps from
diethyl oxalate and acetone: Chelidonic...
-
characteristic substances contained within these species include:
meconic acid and
chelidonic acid, as well as
cyanogenic glycoside compounds derived from tyrosine:...
- The
seeds contain saponins but no
calcium oxalate raphide crystals,
chelidonic acid (unlike Asparagales) or
cysteine derived sulphur compounds (allyl sulphides)...
- 2-pyrone. 4-Pyrone is
prepared via the
thermal decarboxylation of
chelidonic acid. 4-Pyrone and its
derivatives react with
amines in
protic solvents...
-
characters of the
order according to
Stevens are: the
presence of
chelidonic acid,
anthers longer than wide,
tapetal cells bi- to tetra-nuclear, tegmen...
- skin
beneath the nails). It is
blamed on
exposure to
calcium oxalate,
chelidonic acid or
alkaloids such as
lycorine in the sap,
either due to a
direct irritant...
-
Meconic acid, also
known as
acidum meconi**** and
poppy acid, is a
chemical substance found in
certain plants of the
poppy family, Papaveraceae, such as...
- all
contain it. The
stems contain fructans, the
plants also
contain chelidonic acid, saponins,
while some
species contain velamen. The
epicuticular wax...
-
oxalate (in the form of
druses and
cuboidal (prismatic) crystals),
chelidonic acid, tannins, saponins, and the
flavonoids kaempferol and quercetin. "Tofieldia...
