906645-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 906645-20-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,6,6,4 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 906645-20:
(8*9)+(7*0)+(6*6)+(5*6)+(4*4)+(3*5)+(2*2)+(1*0)=173
173 % 10 = 3
So 906645-20-3 is a valid CAS Registry Number.