1613504-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1613504-71-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,3,5,0 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1613504-71:
(9*1)+(8*6)+(7*1)+(6*3)+(5*5)+(4*0)+(3*4)+(2*7)+(1*1)=134
134 % 10 = 4
So 1613504-71-4 is a valid CAS Registry Number.