663189-42-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663189-42-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,1,8 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 663189-42:
(8*6)+(7*6)+(6*3)+(5*1)+(4*8)+(3*9)+(2*4)+(1*2)=182
182 % 10 = 2
So 663189-42-2 is a valid CAS Registry Number.