74291-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74291-09-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,9 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74291-09:
(7*7)+(6*4)+(5*2)+(4*9)+(3*1)+(2*0)+(1*9)=131
131 % 10 = 1
So 74291-09-1 is a valid CAS Registry Number.