689303-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 689303-18-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,9,3,0 and 3 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 689303-18:
(8*6)+(7*8)+(6*9)+(5*3)+(4*0)+(3*3)+(2*1)+(1*8)=192
192 % 10 = 2
So 689303-18-2 is a valid CAS Registry Number.