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1602-11-5

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1602-11-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1602-11-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,0 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1602-11:
(6*1)+(5*6)+(4*0)+(3*2)+(2*1)+(1*1)=45
45 % 10 = 5
So 1602-11-5 is a valid CAS Registry Number.

1602-11-5Upstream product

1602-11-5Relevant articles and documents

Carboxyl activation of 2-mercapto-4,6-dimethylpyrimidine through n-acyl-4,6-dimethylpyrimidine-2-thione: A chemical and spectrophotometric investigation

Rajan

, p. 287 - 291 (2015)

2-Mercapto-4,6-dimethylpyrimidine, as effective carboxyl activating group, has been successfully proved by converting it into respective acyl derivatives and the subsequent conversion to the amides and esters respectively using amines, amino alcohols and alcohols. The aminolysis and esterification were monitored chemically and spectrophotometrically. This paved way to establish that the above mercaptopyrimidine derivative is an efficient carboxyl activating group applicable in solid phase peptide synthesis.

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