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17759-40-9

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17759-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17759-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,7,5 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 17759-40:
(7*1)+(6*7)+(5*7)+(4*5)+(3*9)+(2*4)+(1*0)=139
139 % 10 = 9
So 17759-40-9 is a valid CAS Registry Number.

17759-40-9Downstream Products

17759-40-9Relevant articles and documents

Highly Regioselective Bromination Reactions of Polymethylpyrimidines

Strekowski, Lucjan,Wydra, Roman L.,Janda, Lubomir,Harden, Donald B.

, p. 5610 - 5614 (2007/10/02)

4,5-Dimethyl- and 4,5,6-trimethyl-substituted pyrimidines are brominated at C5-Me with NBS in CCl4 and at C4(6)-Me with bromine in acetic acid to give the corresponding bromomethyl derivatives in a high yield.The remaining methyl group(s) can also be brominated with high regioselectivity.The 2-methylthio substituent is not oxidized under these conditions.

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