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263862-77-7

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263862-77-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 263862-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,8,6 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 263862-77:
(8*2)+(7*6)+(6*3)+(5*8)+(4*6)+(3*2)+(2*7)+(1*7)=167
167 % 10 = 7
So 263862-77-7 is a valid CAS Registry Number.

263862-77-7Relevant articles and documents

Total Synthesis and Determination of the Absolute Configuration of Frondosin B

Masayuki, Inoue,Carson, Mattew W.,Frontier, Alison J.,Danishefsky, Samuel J.

, p. 1878 - 1889 (2007/10/03)

Two concise syntheses of (+/-)-frondosin B (1), an interleukin-8 receptor antagonist, have been achieved from commercially available 5-methoxysalicylaldehyde. The seven-membered ring in ketone 33, the common intermediate for both syntheses, was built by a

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