1620740-64-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620740-64-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,7,4 and 0 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1620740-64:
(9*1)+(8*6)+(7*2)+(6*0)+(5*7)+(4*4)+(3*0)+(2*6)+(1*4)=138
138 % 10 = 8
So 1620740-64-8 is a valid CAS Registry Number.