1620981-13-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620981-13-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,9,8 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1620981-13:
(9*1)+(8*6)+(7*2)+(6*0)+(5*9)+(4*8)+(3*1)+(2*1)+(1*3)=156
156 % 10 = 6
So 1620981-13-6 is a valid CAS Registry Number.