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909031-90-9

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909031-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 909031-90-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,9,0,3 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 909031-90:
(8*9)+(7*0)+(6*9)+(5*0)+(4*3)+(3*1)+(2*9)+(1*0)=159
159 % 10 = 9
So 909031-90-9 is a valid CAS Registry Number.

909031-90-9Relevant articles and documents

Deprotection of heteroaromatic carbamates via a base-catalyzed methanolysis

Shieh, Wen-Chung,Xue, Song,McKenna, Joe,Prasad, Kapa,Repi?, Oljan,Blacklock, Thomas

, p. 5645 - 5648 (2006)

A simple and mild method for the deprotection of heteroaromatic carbamates via methanolysis using a catalytic amount of base such as sodium methoxide, DBU, or Verkade's base (proazaphosphatranes) is presented. Carbamate protecting group of an aliphatic amine is not affected under these conditions.

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