691857-04-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 691857-04-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,8,5 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 691857-04:
(8*6)+(7*9)+(6*1)+(5*8)+(4*5)+(3*7)+(2*0)+(1*4)=202
202 % 10 = 2
So 691857-04-2 is a valid CAS Registry Number.