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91790-55-5

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91790-55-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91790-55-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,9 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91790-55:
(7*9)+(6*1)+(5*7)+(4*9)+(3*0)+(2*5)+(1*5)=155
155 % 10 = 5
So 91790-55-5 is a valid CAS Registry Number.

91790-55-5Relevant articles and documents

Electrochemical Oxidation of Aromatic Ethers. Part 9. Proof of the Mode of Aryl-Aryl Coupling in 4-Benzylisochroman-3-ones, and the Oxidative Reactions of 2-and 3-Aralkyl-1,2,3,4-tetrahydroisoquinolines

Majeed, Amera J.,Sainsbury, Malcolm,Hall, Stephen A.

, p. 833 - 837 (2007/10/02)

The influence of the solvent upon the coupling reactions of 4-(3,4-dimethoxybenzyl)-6,7-dimethoxyisochroman-3-one has been studied and it is shown that formation of the product, 7a,8-dihydro-3,10,11-trimethoxy-2H-phenanthrofuran-2,7(5H)-dione, proceeds through a six-membered ring transition state.Anodic oxidation of 2-aralkyl-1,2,3,4-tetrahydroisoquinolines leads to cleavage of the aralkyl substituent, whereas 1,2,3,4-tetrahydro-6,7-dimethoxy-3-(3,4-dimethoxybenzyl)-2-methylisoquinoline cyclises to yield 1,2,3,4-tetrahydro-7,10,11-trimethoxy-3-methyl-2,8a-methanodibenzoazocin-6-one and its 1-hydroxy derivative.

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