77031-16-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77031-16-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,0,3 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 77031-16:
(7*7)+(6*7)+(5*0)+(4*3)+(3*1)+(2*1)+(1*6)=114
114 % 10 = 4
So 77031-16-4 is a valid CAS Registry Number.