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96965-64-9

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96965-64-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 96965-64-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,9,6 and 5 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 96965-64:
(7*9)+(6*6)+(5*9)+(4*6)+(3*5)+(2*6)+(1*4)=199
199 % 10 = 9
So 96965-64-9 is a valid CAS Registry Number.

96965-64-9Downstream Products

96965-64-9Relevant articles and documents

Twin Benzoannulation of Naphthalene via 1,3-, 1,6-, and 2,6-Naphthodiyne Synthetic Equivalents. New Syntheses of Triphenylene, Benzanthracene, and Naphthacene

Gribble, Gordon W.,Perni, Robert B.,Onan, Kay D.

, p. 2934 - 2939 (2007/10/02)

New syntheses of triphenylene (4), benzanthracene (5), naphthacene (6), and the tetramethylated derivatives 17 and 25 are described that feature, as the key step, the formal Diels-Alder cycloaddition between a naphthodiyne synthon (1, 2, or 3) and a furan (10 or 14).Subsequent deoxygenation affords the arene in 16-28percent overall yield from dibromo ditosylate 7, 8, or 9.The latter are prepared in two steps from commercially available 2,3- or 2,7-dihydroxynaphthalene, and, with phenyllithium, serve as synthetic equivalents of 1, 2, and 3.The X-ray structure of the anti isomer of 23 is discussed in some detail.

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