Need a source for ammelide

[Shankar Bhattacharyya]

In connection with the current interest in analysis of food products for
melamine and related triazines, I am looking for a source for ammelide,
CAS 645-93-2. FDA says that TCI America is a source for the compound but
TCI says they have no stock and it is not clear to me that there is
actually any non-industrial quantity available anywhere.

I could make some by pyrolysis of urea, which produces it as a
byproduct. That is well within my technical range to do, including
subsequent purification and characterization. However, temperatures are
high enough to put a lot of melamine in the vapor phase and we are not
equipped to contain that. The likely side effect would be contamination
of my lab with melamine. That would not be a good idea for assorted
humans in the environment and we would probably find melamine in all
future samples analyzed at the lab for the rest of time.

I would appreciate it if anyone could point me at a source or help me
out with a few milligrams of ammelide.

Please respond both on the newsgroup and by email. I can get to the
email while I am at work and, should someone have any ideas I would like
too follow up on it immediately.

Thanks.

- Shankar

[David Stranz]

Post by Shankar Bhattacharyya
In connection with the current interest in analysis of food
products for melamine and related triazines, I am looking for a
source for ammelide, CAS 645-93-2. FDA says that TCI America is
a source for the compound but TCI says they have no stock and it
is not clear to me that there is actually any non-industrial
quantity available anywhere.
I could make some by pyrolysis of urea, which produces it as a
byproduct. That is well within my technical range to do,
including subsequent purification and characterization. However,
temperatures are high enough to put a lot of melamine in the
vapor phase and we are not equipped to contain that. The likely
side effect would be contamination of my lab with melamine. That
would not be a good idea for assorted humans in the environment
and we would probably find melamine in all future samples
analyzed at the lab for the rest of time.
I would appreciate it if anyone could point me at a source or
help me out with a few milligrams of ammelide.
Please respond both on the newsgroup and by email. I can get to
the email while I am at work and, should someone have any ideas
I would like too follow up on it immediately.
Thanks.
- Shankar

Try searching at www.emolecules.com - their database has millions of
chemicals and suppliers for same.

My search yielded one supplier, but try the search yourself so you
can enjoy using a new Web resource.

David

[Shankar Bhattacharyya]

Post by David Stranz

Post by Shankar Bhattacharyya
In connection with the current interest in analysis of food
products for melamine and related triazines, I am looking for a
source for ammelide, CAS 645-93-2.

Try searching at www.emolecules.com - their database has millions of
chemicals and suppliers for same.
My search yielded one supplier, but try the search yourself so you
can enjoy using a new Web resource.

Thanks for the pointer. It looks like a highly useful resource.

Unfortunately, they are backed up to the end of August but I did get a
response within hours of sending email, with a quote and so on.

Incidentally, some of the related compounds appear to contain ammelide
as an impurity, based on some gc/ms work we did last week. However, I
don't have enough of those to use them as a source.

- Shankar