17974-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17974-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,7 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 17974-81:
(7*1)+(6*7)+(5*9)+(4*7)+(3*4)+(2*8)+(1*1)=151
151 % 10 = 1
So 17974-81-1 is a valid CAS Registry Number.