1643797-22-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1643797-22-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,7,9 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1643797-22:
(9*1)+(8*6)+(7*4)+(6*3)+(5*7)+(4*9)+(3*7)+(2*2)+(1*2)=201
201 % 10 = 1
So 1643797-22-1 is a valid CAS Registry Number.