740021-16-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 740021-16-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,0,0,2 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 740021-16:
(8*7)+(7*4)+(6*0)+(5*0)+(4*2)+(3*1)+(2*1)+(1*6)=103
103 % 10 = 3
So 740021-16-3 is a valid CAS Registry Number.