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1282523-82-3

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1282523-82-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1282523-82-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,2,5,2 and 3 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1282523-82:
(9*1)+(8*2)+(7*8)+(6*2)+(5*5)+(4*2)+(3*3)+(2*8)+(1*2)=153
153 % 10 = 3
So 1282523-82-3 is a valid CAS Registry Number.

1282523-82-3Downstream Products

1282523-82-3Relevant articles and documents

Guanidine hydrochloride as an organocatalyst for N-Boc protection of amino groups

Jahani, Fatemeh,Tajbakhsh, Mahmood,Golchoubian, Hamid,Khaksar, Samad

supporting information; experimental part, p. 1260 - 1264 (2011/04/15)

A simple and efficient method for the chemoselective N-Boc protection of the amine moiety in a variety of compounds is described using di-tert-butyl dicarbonate and guanidine hydrochloride as an organocatalyst in ethanol at 35-40°C. Selective mono-N-Boc protection of diamines and chemoselective protection of hydroxylamines without formation of any side products is achieved. Amino acids and peptides are N-Boc protected efficiently in excellent yields under convenient reaction conditions.

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