689290-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 689290-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,9,2,9 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 689290-87:
(8*6)+(7*8)+(6*9)+(5*2)+(4*9)+(3*0)+(2*8)+(1*7)=227
227 % 10 = 7
So 689290-87-7 is a valid CAS Registry Number.