689206-57-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 689206-57-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,9,2,0 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 689206-57:
(8*6)+(7*8)+(6*9)+(5*2)+(4*0)+(3*6)+(2*5)+(1*7)=203
203 % 10 = 3
So 689206-57-3 is a valid CAS Registry Number.