Talk:CAS Registry Number

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Chemistry (Rated Start-class, Mid-importance)
WikiProject icon This article is within the scope of WikiProject Chemistry, a collaborative effort to improve the coverage of chemistry on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
 Mid  This article has been rated as Mid-importance on the project's importance scale.
WikiProject Unique Identifiers
CAS Registry Number is part of, or of interest to, WikiProject Unique Identifiers, which encourages the use of unique identifiers in Wikipedia, and documents them in the article space. If you would like to participate, visit the project page.


I think the full name is Chemical Abstracts Service Registry Number, so I redirected it here. Should the article be moved to the full name? The abbreviated name is far more common. -- Kjkolb 09:44, 19 December 2005 (UTC) itself uses the registered trademark "CAS Registry Number®". I'd say keep it. The capitalization doesn't match though. However since it will usually be used descriptively in the articles and not as a proper noun, that seems fine too for our purposes. Femto 14:10, 19 December 2005 (UTC)
Okay, thanks. I've been working on topics that other encyclopedias and other sources have and Wikipedia doesn't, so I've been asking a lot of questions on talk pages when I'm not sure about something. :-) Kjkolb 16:04, 19 December 2005 (UTC)

Categorizing chemical substances and providing structures as data files[edit]

  • In my opinion all chemical substances should be provided as data files, preferably as (compressed) Chemical Markup Language and/or Chemical table files including all informations, like CAS, physicochemical data, etc.
  • All those entries should be categorized, which will allow any mining scheme to collect informations from those files.

JKW 15:17, 13 April 2006 (UTC)

Well, did they?[edit]

"The Chemical Abstracts Service has announced on its web site that it will add an additional digit to new CAS registry numbers, starting about January 2008." It's November 2008 now, did they add the digit? —Preceding unsigned comment added by Dr-spangle (talkcontribs) 19:50, 10 November 2008 (UTC)

Yes, all this means is that there are now CAS numbers that look like 1XXXXXXX-XX-X. I have already run across a few. (talk) 04:13, 24 December 2008 (UTC)

At least another authentic search engine for CAS number is needed....[edit]

for verification-- (talk) 02:18, 11 July 2009 (UTC)

I found this service is not biased for this chemical -- (talk) 12:41, 13 July 2009 (UTC)

the evidence to support my opinion -- (talk) 13:47, 13 July 2009 (UTC)

Here's another one that I typically use in my in work as a chemist. 2001:1998:860:1002:C1AF:6809:336F:FEA8 (talk) 16:58, 9 July 2015 (UTC)

IUPAC name in CAS search engine...???[edit]

Unfortunately, I can find nil in the ones listed in the article and those engines needs to be improved, in regards to IUPAC names-- (talk) 03:46, 18 July 2009 (UTC)

use CAS No [6381-92-6] as an example -- (talk) 03:50, 18 July 2009 (UTC)

The definition of the title....[edit]

needs to be verified, as it is critical to the associated industries. Because pure chemicals are very different to their mixtures-- (talk) 00:21, 25 July 2009 (UTC)

The traceability of wiki editions are not very good....[edit]

and see the edition trails for the search engine list

-- (talk) 08:26, 6 February 2010 (UTC)

Call for reviewing the page of Glycerol monostearate, as....[edit]

for the first time, I have come across that a cas number varies with a chemical grade. Is it a new rule....??? -- (talk) 07:48, 18 March 2010 (UTC)

Technical Question[edit]

I attempted to simplify the article by merging some topics and redundancies.
Unfortunately WP doesnt clarify the meaning of all terms in the article-and I have limited technical knowledge.
I am uncertain whether "WP:Coordination complex" is generally equivalent to the CAS' coordination compound- as suggested by a previous editor.
But WP does not define "coordination compound". While it seems highly likely, I am uncertain whether the article's first sentence [which I constructed] is generally true. If not, I'd appreciate illumination.Hilarleo Hey,L.E.O. 22:39, 8 November 2010 (UTC)

Requested move[edit]

The following discussion is an archived discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review. No further edits should be made to this section.

The result of the move request was: Rename. Timrollpickering (talk) 23:17, 21 August 2014 (UTC)

CAS registry numberCAS Registry Number – Capitalise (R, N). Follow the source DePiep (talk) 22:32, 13 August 2014 (UTC)

The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page or in a move review. No further edits should be made to this section.


"A User or Organization may include, without a license and without paying a fee, up to 10,000 CAS Registry Numbers or CASRNs in a catalog, web site, or other product for which there is no charge."

So, doesn't Wikipedia (including Wikidata) contain more than 10,000 CASRNs already? (don't talk secrets) (talk) 11:53, 4 November 2015 (UTC)

That statement does not rule out getting permission to use more than 10000 CAS numbers without a fee. It is probably debatable whether that provision could be legally enforced as well. In any case, at one point there were discussions between WikiProject Chemistry participants and Chemical Abstracts. You could ask there if you are interested in the details. -- Ed (Edgar181) 15:47, 4 November 2015 (UTC)