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20925-99-9

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20925-99-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20925-99-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,2 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20925-99:
(7*2)+(6*0)+(5*9)+(4*2)+(3*5)+(2*9)+(1*9)=109
109 % 10 = 9
So 20925-99-9 is a valid CAS Registry Number.

20925-99-9Downstream Products

20925-99-9Relevant articles and documents

THE REACTION OF ACTIVATED ARYL AND HETEROARYL DIHALIDES WITH HMPA. A REGIOSELECTIVITY STUDY

Gupton, John T.,Wysong, Ernest,Norman, Bryan,Hertel, George,Idoux, John P.

, p. 43 - 52 (2007/10/02)

A series of activated aryl and heteroaryl dihalides were reacted with HMPA at elevated temperatures.Of the eleven examples studied, all but one reacted in a regioselective manner to give a monohalo-N,N-dimethylamino derivative.

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