74656-84-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74656-84-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,6,5 and 6 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 74656-84:
(7*7)+(6*4)+(5*6)+(4*5)+(3*6)+(2*8)+(1*4)=161
161 % 10 = 1
So 74656-84-1 is a valid CAS Registry Number.