74231-29-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74231-29-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,3 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74231-29:
(7*7)+(6*4)+(5*2)+(4*3)+(3*1)+(2*2)+(1*9)=111
111 % 10 = 1
So 74231-29-1 is a valid CAS Registry Number.