Re: [PIUG List] search problem, CASRN; catalogs

Points well taken. I'm in the process now of trying to sort out the
accurate description of a substance in which there is a discrepancy
between the CAS Registry File entry, the supplier's website and the
supplier's MSDS. The Supplier's website and MSDS do not give a CAS
registry number. However, there is one listed in the Registry file.

Never a dull moment in this business!!

Best regards, Mit freundlichen Grüssen, Meilleures salutations,
Bruce Mason
CIBA Vision Corporation
R&D Technical Services
CIBA Vision Corporation
11460 Johns Creek Parkway
Duluth, GA 30097
USA
Phone: +1 678-415-3577
Fax: +1 678-415-7467
Email : bruce.mason_at_cibavision.com






"BOB BUNTROCK" <buntrock16_at_verizon.net>
01/17/2008 04:12 PM

To
"PIUG Discussion List @ Listbox" <piug_discussion_list_at_v2.listbox.com>
cc

Subject
Re: [PIUG List] search problem, CASRN; catalogs







As Eric Shively said, situations like these demonstrate the value of using=
 
CASRN to accurately describe chemical compounds (as well as good
nomenclature). Citing compounds only from Chemcats listings is dangerous.=
 
 Citations to material in any online and e-version of any database,
including document references, needs to have some sort of date stamp or
"last accessed on ..." indication.
 
I would hope that any compound in Chemcats (and therefore in someone's
catalog) has been made at some time or another. I would hope that
suppliers of chemicals would not go on "fishing expeditions" and list news=
 
compounds that the feel they could make if they had a customer. I suppose=
 
stranger (and more devious) things happen. Caveat emptor.
 
-- Bob Buntrock
Orono, ME
----- Original Message -----
From: Sandy Burcham
To: PIUG Discussion List @ Listbox
Sent: Wednesday, January 16, 2008 10:08 AM
Subject: RE: [PIUG List] search problem, CASRN

Dear Eric - I very much appreciate your response. I was rxtrtroubled to
discover just how widespread this problem appears to be and was very much=
 
concerned about losing prior art retrievability. Since some of the cpds=
 
listed in Chemcats have never been made giving them a CASRN might not be
within the parameters associated with that file , but since they have been=
 
publised in a catalog, cited as prior art - perhaps CA could create a file=
 
of withdrawn CPDS having someother means of being identified .
Sandy


-----Original Message-----
From: "Shively, Eric"
Sent: Jan 16, 2008 9:57 AM
To: "PIUG Discussion List @ Listbox"
Subject: 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 Fri Jan 18 2008 - 14:56:59