690220-08-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690220-08-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,2,2 and 0 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 690220-08:
(8*6)+(7*9)+(6*0)+(5*2)+(4*2)+(3*0)+(2*0)+(1*8)=137
137 % 10 = 7
So 690220-08-7 is a valid CAS Registry Number.