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115695-28-8

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115695-28-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 115695-28-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,5,6,9 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 115695-28:
(8*1)+(7*1)+(6*5)+(5*6)+(4*9)+(3*5)+(2*2)+(1*8)=138
138 % 10 = 8
So 115695-28-8 is a valid CAS Registry Number.

115695-28-8Downstream Products

115695-28-8Relevant articles and documents

A novel method of complete activation by carbonyldiimidazole: application to ester synthesis

Morton, Robert C.,Mangroo, Dev,Gerber, Gerhard E.

, p. 1701 - 1705 (2007/10/02)

The activation of carboxylic groups by carbonyldiimidazole (CDI) results in the presence of excess CDI; it is shown that this reacts rapidly with the target hydroxyl groups under acylation conditions, thus preventing the desired acylation even when an excess of reagent is present and resulting poor yields.The methods described result in rapid, complete, and convenient removal of the excess CDI.This procedure thus permits the use of sufficient excess of CDI to effect complete activation of the acid to the imidazole.The imidazolides prepared in this manner, when used in limiting amounts, can be quantitatively converted to esters or amides; when used in slight excess, these imidazolides result in the quantitative acylation of target groups.

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