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142697-70-9

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142697-70-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142697-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,6,9 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 142697-70:
(8*1)+(7*4)+(6*2)+(5*6)+(4*9)+(3*7)+(2*7)+(1*0)=149
149 % 10 = 9
So 142697-70-9 is a valid CAS Registry Number.

142697-70-9Relevant articles and documents

Novel practical deprotection of N-Boc compounds using fluorinated alcohols

Choy, Jason,Jaime-Figueroa, Saul,Jiang, Laurence,Wagner, Paul

, p. 3840 - 3853 (2008/12/23)

The thermolytic deprotection of N-Boc compounds was accomplished using TFE (2,2,2-trifluoroethanol) or HFIP (hexafluoroisopropanol) as solvents. Even though the cleavage of the t-butylcarbamate (Boc) group can be achieved at solvent reflux temperature, the deprotection process was significantly accelerated under microwave-assisted conditions. The practicality of this methodology was demonstrated on alkyl, aryl, and heteroaromatic N-Boc-amines. Copyright Taylor & Francis Group, LLC.

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