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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.
Now, this validates that this numerical sequence (1-7 digits) - (2 digits) - (1 digit) is legal to use as a CAS number, but doesn't validate that it is in use in the CAS Registry. --Underscore bruce 18:07, 18 September 2008 (UTC)
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.
According to the New York Times, here's exactly how to play Strands: Find theme words to fill the board. Theme words stay highlighted in blue when found.
And this raises indeed the question, if there is any use of a CAS numbers in the public domain? Looks like a classical license compatibility problem. And this raises the following questions. 1. It is not allowed using SciFinder® and STN® for curating CAS numbers. 2. Is it allowed using scientific publications with CAS numbers for curating CAS ...
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Substructure search is used to retrieve from a database of chemicals those which contain the pattern of atoms and bonds specified by a user. It is implemented using a specialist type of query language and in real-world applications the search may be further constrained using logical operators on additional data held in the database.
Trio the Buffalos won Season 12 of "The Masker Singer" marking the first win from a group in the show's nearly six year run.