1620320-17-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620320-17-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,3,2 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1620320-17:
(9*1)+(8*6)+(7*2)+(6*0)+(5*3)+(4*2)+(3*0)+(2*1)+(1*7)=103
103 % 10 = 3
So 1620320-17-3 is a valid CAS Registry Number.