Wikipedia:WikiProject Chemistry/CAS validation

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NOTE: Chemical Abstracts have agreed to perform this work for us. Information on this process will be posted once details are available.

This topic is the main agenda item at the February 5th IRC Meeting. Please join us!

CAS numbers need to be validated for the ~4000 chemical pages. Since the only authoritative source is the American Chemical Society, SciFinder looks like the best bet. For various reasons (see previous IRC discussions), it is not practical for one editor to validate them all. Thus, the divison of labor:

ChemSpiderMan (talk · contribs) will be in charge of the distribution. Help is wanted! To contribute, simply request the block (number of entries) you would like to handle, and sign by using ~~~~ after you are done. It may be helpful to try tackling a smaller block, before making further requests.

[edit] How to validate

I believe there is only one way to validate the CAS number. Visit the authority for CAS numbers and use either Scifinder or STN to search/validate the CAS number for the represented structure. There ARE multiple CAS numbers associated with a single compound so the CAS number itself might need to be annotated. For most complex organics I don't think this will be a problem but will be for the inorganics and a number of the more common organics. --ChemSpiderMan (talk) 05:15, 23 January 2008 (UTC)

[edit] Pending requests

[edit] Allocated blocks

1. 50 entries, to get a feel for it. --Rifleman 82 (talk) 17:29, 22 January 2008 (UTC)
   1. 50 entries have been uploaded for you here: http://www.chemspider.com/docs/wikipedia/Structures_1_to_25.pdf
2. 50 entries for me, as a trial, I'll see if I can get the access somehow. Walkerma (talk) 20:49, 22 January 2008 (UTC) Note that I may not get to these for a couple of weeks, it will involve a special trip to another college. But I want to see what's involved. Walkerma (talk) 07:43, 26 January 2008 (UTC)
   1. http://www.chemspider.com/docs/wikipedia/Structures_26_to_50.pdf

      Let's try this format...if it works we will stick with it. I will not generate anymore until you've moved through these...but no pressure on you. I will then generate in blocks of 25. --ChemSpiderMan (talk) 00:49, 24 January 2008 (UTC)

1. 150 entries for validation. I will put the project on hold until we have worked our way through these. All are here:

• 1 to 25 and
• 26 to 50 and
• 51 to 75 and
• 76 to 100 and
• 101 to 125 and
• 126 to 150 -- Done with these 25. Notes: 1) found no CAS number for Activella; 2) the only number I found for Adenosine thiamine triphosphate is for the neutral chloride salt, which does not match the structure diagram. 3) found a CAS number for acriflavine, but CAS has no structure diagram, which is unusual. In the cases with no chemboxes I just added the CAS number to the talk page or somewhere in the article. --Itub (talk) 14:27, 12 February 2008 (UTC)

Enjoy.--ChemSpiderMan (talk) 03:38, 4 February 2008 (UTC)

I have now updated the links above so you can access the files without passwords.--ChemSpiderMan (talk) 01:20, 6 February 2008 (UTC)