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179727-62-9

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179727-62-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 179727-62-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,9,7,2 and 7 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 179727-62:
(8*1)+(7*7)+(6*9)+(5*7)+(4*2)+(3*7)+(2*6)+(1*2)=189
189 % 10 = 9
So 179727-62-9 is a valid CAS Registry Number.

179727-62-9Relevant articles and documents

Use of pentafluorophenyl esters for one-pot protection/activation of amino and thiol carboxylic acids

Gayo, Leah M.,Suto, Mark J.

, p. 4915 - 4918 (2007/10/03)

As part of our efforts in the area of combinatorial chemistry, we have been exploring new methods for the construction of combinatorial libraries in a bidirectional fashion. Herein, we describe a new one-pot procedure for the simultaneous protection/activation of amino and thiol carboxylic acids using pentafluorophenyl trifluoroacetate (TFAPfp) and related pentafluorophenyl reagents (FmocPfp and AcPfp).

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