77934-69-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77934-69-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,3 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77934-69:
(7*7)+(6*7)+(5*9)+(4*3)+(3*4)+(2*6)+(1*9)=181
181 % 10 = 1
So 77934-69-1 is a valid CAS Registry Number.