2108512-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2108512-89-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 2,1,0,8,5,1 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2108512-89:
(9*2)+(8*1)+(7*0)+(6*8)+(5*5)+(4*1)+(3*2)+(2*8)+(1*9)=134
134 % 10 = 4
So 2108512-89-4 is a valid CAS Registry Number.