74845-49-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74845-49-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,4 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74845-49:
(7*7)+(6*4)+(5*8)+(4*4)+(3*5)+(2*4)+(1*9)=161
161 % 10 = 1
So 74845-49-1 is a valid CAS Registry Number.