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506422-90-8

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506422-90-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 506422-90-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,6,4,2 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 506422-90:
(8*5)+(7*0)+(6*6)+(5*4)+(4*2)+(3*2)+(2*9)+(1*0)=128
128 % 10 = 8
So 506422-90-8 is a valid CAS Registry Number.

506422-90-8Relevant articles and documents

Regiocontrolled Opening of Cyclic Ethers Using Dimethylboron Bromide

Guindon, Yvan,Therien, Michel,Girard, Yves,Yoakim, Christiane

, p. 1680 - 1686 (1987)

The cleavage of various cyclic ethers (3- to 7-membered rings) was achieved under very mild conditions using dimethylboron bromide to afford the corresponding bromo alcohols.In particular, 2-substituted tetrahydrofurans were regioselectively cleaved by a predominantly SN2 - type mechanism favoring the formation of primary vs. secondary bromides.Dimethylboron bromide also cleaved chemoselectively substituted tetrahydrofurans in the presence of functional groups such as acyclic ethers, silyl ethers, esters, amides, ketones,etc.

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