74180-77-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74180-77-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,8 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74180-77:
(7*7)+(6*4)+(5*1)+(4*8)+(3*0)+(2*7)+(1*7)=131
131 % 10 = 1
So 74180-77-1 is a valid CAS Registry Number.