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Different CAS Registry Numbers [1] are used for each form of a substance. For example, something simple like alanine will have one CAS# for the D form, another for L, another for "unspecified" and a fourth one for racemic. There would be another four CAS#s for the hydrochloride, four for the (1:1) sulfate, four for the (2:1)sulfate, etc.
:) For the entries that had a CAS number, I searched for that CAS number using SciFinder and checked if it matched the structure in the PDF file. There was one case where the stereochemistry of the structure in the PDF was wrong, but the structure in the WP article was correct!
According to CAS, his visionary view of CAS' potential "led to expansion, modernization, and the forging of international alliances with other information organizations." [15] CAS was an early leader in the use of computer technology to organize and disseminate information. [16] The CAS Chemical Registry System was introduced in 1965.
Plus, the skies are gloomy many days of the year, and I'm not a huge fan of the local cuisine. Full disclosure: I've been four times, and each visit occurred during the dark, cold winter months ...
Many of these database companies use the same name for their file format as they do for their database (including Copac, CSA, ISI, Medline, Ovid, PubMed, and SciFinder). For the ability to retrieve citations from the particular databases (rather than the file format), please refer to the database connectivity table that is below this table.
The report notes that 11.2 million older adults spent over 30% of their income on housing in 2021, and only 36.5% of eligible households received federal housing assistance.
The firm predicts that home prices will rise by 2.6% in 2025, while existing-home sales will notch 4.3 million, up from the 4 million sales it expects this year.
This page was last edited on 4 February 2023, at 01:33 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.