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888491-09-6

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888491-09-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 888491-09-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,8,4,9 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 888491-09:
(8*8)+(7*8)+(6*8)+(5*4)+(4*9)+(3*1)+(2*0)+(1*9)=236
236 % 10 = 6
So 888491-09-6 is a valid CAS Registry Number.

888491-09-6Downstream Products

888491-09-6Relevant articles and documents

Copolymerizable methine and anthraquinone compounds and articles containing them

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Page/Page column 33; 34, (2008/06/13)

This invention relates to polymerizable ultraviolet light absorbers and yellow colorants and their use in ophthalmic lenses. In particular, this invention relates to polymerizable ultraviolet light absorbing methine compounds and yellow compounds of the methine and anthraquinone classes that block ultraviolet light and/or violet-blue light transmission through ophthalmic lenses.

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