RE: [PIUG List] search problem, CASRN

Regarding the question raised by Sandy Burcham, the information on
commercially available substances in CHEMCATS is provided by the vendors
of those substances. They may withdraw a chemical from commercial
availability at any time, at which point the record would be taken off
of CHEMCATS. However, after a CHEMCATS listing is withdrawn, the
substance record still appears in the CAS Registry, along with the
vendor's name as the source of that substance's registration. So users
can contact the vendor for more information as needed.

The concern addressed in this recent discussion highlights the value of
identifying substances of interest by CAS Registry Number, because those
records will continue to be available in the CAS Registry, which is the
authoritative source. However, we recognize there is a problem if
someone chooses to cite the CHEMCATS record or the supplier's chemical
ID number as prior art. We will consider means of helping users deal
with that problem.

Eric Shively

CAS


________________________________

From: Sandy Burcham [mailto:cass123_at_earthlink.net]
Sent: Wednesday, January 16, 2008 8:57 AM
To: PIUG Discussion List @ Listbox
Cc: piug_discussion_list_at_v2.listbox.com
Subject: Re: [PIUG List] search problem, CASRN



Wendy Warr provided me wirh Ambinter's website and e-mail information.
Ambinter responded to my request saying that the weird numbers were not
their numbers either. So far no one has been able to identify the
number format. I am extremely upset about what is disappearing prior
art. The people at CAS who are involved with Chemcats couldn't identify
the format either but didn't seem bothered by the fact that the
information hd come from their database originally and was no longer
there-

Can we, as searchers, allow this prior art to disappear???

Sandy Burcham

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Received on Wed Jan 16 2008 - 16:02:48