644961-50-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 644961-50-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,4,9,6 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 644961-50:
(8*6)+(7*4)+(6*4)+(5*9)+(4*6)+(3*1)+(2*5)+(1*0)=182
182 % 10 = 2
So 644961-50-2 is a valid CAS Registry Number.