77311-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77311-69-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,3,1 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77311-69:
(7*7)+(6*7)+(5*3)+(4*1)+(3*1)+(2*6)+(1*9)=134
134 % 10 = 4
So 77311-69-4 is a valid CAS Registry Number.