77752-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77752-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,5 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77752-57:
(7*7)+(6*7)+(5*7)+(4*5)+(3*2)+(2*5)+(1*7)=169
169 % 10 = 9
So 77752-57-9 is a valid CAS Registry Number.