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118207-31-1

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118207-31-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118207-31-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,2,0 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 118207-31:
(8*1)+(7*1)+(6*8)+(5*2)+(4*0)+(3*7)+(2*3)+(1*1)=101
101 % 10 = 1
So 118207-31-1 is a valid CAS Registry Number.

118207-31-1Downstream Products

118207-31-1Relevant articles and documents

Efficient Preparation of Cis Vicinal Tertiary Diamines from 2-Hydroxy Ketones in Two Steps

Fraenkel, Gideon,Gallucci, Judith,Rosenzweig, Howard S.

, p. 677 - 681 (2007/10/02)

Cyclic (C5 and C6) cis vicinal tertiary diamines are efficiently prepared by catalytic hydrogenation, Pd(C), of the corresponding N-substituted amino enamines, e.g. 6.The latter are obtained by p-toluenesulfonic acid catalyzed condensation of secondary amines with cyclic 2-hydroxy ketones in refluxing benzene under Dean-Stark conditions or from the N-substituted 2-amino ketones.For example cis-1,2-dipyrrolidinocyclohexane has been obtained from adipoin in 69percent overall yield, isolated.

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