77786-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77786-77-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,8 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77786-77:
(7*7)+(6*7)+(5*7)+(4*8)+(3*6)+(2*7)+(1*7)=197
197 % 10 = 7
So 77786-77-7 is a valid CAS Registry Number.