740817-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 740817-84-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,0,8,1 and 7 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 740817-84:
(8*7)+(7*4)+(6*0)+(5*8)+(4*1)+(3*7)+(2*8)+(1*4)=169
169 % 10 = 9
So 740817-84-9 is a valid CAS Registry Number.