780016-00-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 780016-00-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,0,0,1 and 6 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 780016-00:
(8*7)+(7*8)+(6*0)+(5*0)+(4*1)+(3*6)+(2*0)+(1*0)=134
134 % 10 = 4
So 780016-00-4 is a valid CAS Registry Number.