18941-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18941-71-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,4 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18941-71:
(7*1)+(6*8)+(5*9)+(4*4)+(3*1)+(2*7)+(1*1)=134
134 % 10 = 4
So 18941-71-4 is a valid CAS Registry Number.