When you cite data in a publication, do not rely on search engines. Errors are possible, but they have to be fixed. Let's run a small experiment - how long does it take to fix it? Today, when I searched for boiling point in SciFinder (database provided by the Chemical Abstracts Service of the American Chemical Society) for Ethyl isobutyrylacetate, CAS [7152-15-0], a value of b.p. 92 °C at 16 Torr was cited by SciFinder with a reference to [Reid, Evans B.; Journal of Organic Chemistry 1950, V15, P572-82]. Upon reading that paper, I have discovered, that the above b.p. was actually for a different compound - Ethyl isobutyryl propionate prepared from Ethyl isobutyrylacetate by alkylation with methyl iodide. I can see how this error originated - two chemical names were placed close in the text. I have sent that info to CAS through their contact-us-web-form today, on February 15th, 2020. Let's watch. A week ago, I have notified CAS about another similar error, but have not heard from them yet. I wonder if I am a "lucky" chemist having a rare event twice in the past week, or else... Has anything like that happen to anyone? We may not know because we do not have time to talk about such small things when working in a hurry.
most of the data of CAS search is accurate . it depends on way of search of data base
Accuracy of information is the core business for CAS. The first error posted a week ago has been now fixed by CAS Customer Service. They have removed the wrong information.
Dear Alexey there are many similar errors that can be found especially on reference citation. I found in many journal using numbering for reference, after downloading the selected reference I was surprised to see that there was not relationship between what was said in the paper and the reference for instance. Also in some journals chemical structures don't match with the assigned name by the author, in major cases you may found lack of carbon carbon double bond, lack of heteroatom and so on.
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