636989-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 636989-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,6,9,8 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 636989-71:
(8*6)+(7*3)+(6*6)+(5*9)+(4*8)+(3*9)+(2*7)+(1*1)=224
224 % 10 = 4
So 636989-71-4 is a valid CAS Registry Number.