650621-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 650621-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,0,6,2 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 650621-20:
(8*6)+(7*5)+(6*0)+(5*6)+(4*2)+(3*1)+(2*2)+(1*0)=128
128 % 10 = 8
So 650621-20-8 is a valid CAS Registry Number.