219970-53-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219970-53-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,7 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 219970-53:
(8*2)+(7*1)+(6*9)+(5*9)+(4*7)+(3*0)+(2*5)+(1*3)=163
163 % 10 = 3
So 219970-53-3 is a valid CAS Registry Number.