77643-82-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77643-82-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,6,4 and 3 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77643-82:
(7*7)+(6*7)+(5*6)+(4*4)+(3*3)+(2*8)+(1*2)=164
164 % 10 = 4
So 77643-82-4 is a valid CAS Registry Number.
77643-82-4Relevant academic research and scientific papers
METHYLATON DES HYDROXY-4 ARYL-5 PYRIMIDINES
Tsatsaronis, Gheorghios,Grekou-Lazana, Domniki
, p. 559 - 564 (2007/10/02)
The methylation of 4-hydroxy-5-arylpyrimidines takes place principally at the 3-position of the pyrimidinic ring.Methylation at the 1- and 4-position depends on the methylation agent as well as the solvent.The obtained methylated derivatives depend to som
