636989-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 636989-80-5 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, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 636989-80:
(8*6)+(7*3)+(6*6)+(5*9)+(4*8)+(3*9)+(2*8)+(1*0)=225
225 % 10 = 5
So 636989-80-5 is a valid CAS Registry Number.