1620155-57-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620155-57-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,1,5 and 5 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1620155-57:
(9*1)+(8*6)+(7*2)+(6*0)+(5*1)+(4*5)+(3*5)+(2*5)+(1*7)=128
128 % 10 = 8
So 1620155-57-8 is a valid CAS Registry Number.