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1620543-70-5

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1620543-70-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1620543-70-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,5,4 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1620543-70:
(9*1)+(8*6)+(7*2)+(6*0)+(5*5)+(4*4)+(3*3)+(2*7)+(1*0)=135
135 % 10 = 5
So 1620543-70-5 is a valid CAS Registry Number.

1620543-70-5Relevant articles and documents

Oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′- diamines (BINAMs) via C-C bond cleavage and nitrogen migration: A versatile synthesis of U-shaped azaacenes

Takeda, Youhei,Okazaki, Masato,Minakata, Satoshi

supporting information, p. 10291 - 10294 (2014/08/18)

An oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′- diamines (BINAMs) that involves the cleavage of a strong C-C single bond of the binaphthalene unit and the nitrogen migration has been discovered. The unprecedented rearrangement enables access to a series of U-shaped azaacenes otherwise difficult to prepare in a selective manner by classical methods. Moreover, physicochemical properties of the unique azaacenes have been comprehensively investigated. This journal is the Partner Organisations 2014.

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