19769-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19769-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,6 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 19769-31:
(7*1)+(6*9)+(5*7)+(4*6)+(3*9)+(2*3)+(1*1)=154
154 % 10 = 4
So 19769-31-4 is a valid CAS Registry Number.
19769-31-4Relevant articles and documents
Synthesis of 6-alkyl- and arylamino-9-(tetrahydro-2-pyranyl)purines via 6-methylsulfonylpurine
Villar, Jose Daniel Figueroa,Motta, Marita Almeida
, p. 1005 - 1015 (2007/10/03)
A series of six potential plant hormones, 6-alky- and arylamino-9- (tetrahydro-2-pyranyl)purines were prepared in three steps in 35 to 45% overall yield from 6-methylthiopurine via 6-methylsulfonylpurine.