644985-59-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 644985-59-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,4,9,8 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 644985-59:
(8*6)+(7*4)+(6*4)+(5*9)+(4*8)+(3*5)+(2*5)+(1*9)=211
211 % 10 = 1
So 644985-59-1 is a valid CAS Registry Number.