1620523-68-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620523-68-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,5,2 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1620523-68:
(9*1)+(8*6)+(7*2)+(6*0)+(5*5)+(4*2)+(3*3)+(2*6)+(1*8)=133
133 % 10 = 3
So 1620523-68-3 is a valid CAS Registry Number.