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934815-36-8

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934815-36-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 934815-36-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,4,8,1 and 5 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 934815-36:
(8*9)+(7*3)+(6*4)+(5*8)+(4*1)+(3*5)+(2*3)+(1*6)=188
188 % 10 = 8
So 934815-36-8 is a valid CAS Registry Number.

934815-36-8Relevant articles and documents

New syntheses of dalbergichromene and dalbergin from vanillin via neoflavene intermediate

Li, Sie-Rong,Chen, Liang-Yeu,Tsai, Jui-Chi,Tzeng, Jing-Yu,Tsai, Ian-Lih,Wang, Eng-Chi

, p. 2139 - 2141 (2007)

In this Letter, naturally occurring dalbergichromene and dalbergin were synthesized from a common neoflavene intermediate, which was derived from vanillin. The giving neoflavene intermediate was debenzylated with AlCl3 to yield dalbergichromene in 39% total yield, and it was oxidized by DDQ, and subsequently debenzylated by Pd(OH)2/C and cyclohexene in refluxing ethanol to give dalbergin in 31% total yield.

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