690221-85-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690221-85-3 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 1 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 690221-85:
(8*6)+(7*9)+(6*0)+(5*2)+(4*2)+(3*1)+(2*8)+(1*5)=153
153 % 10 = 3
So 690221-85-3 is a valid CAS Registry Number.