77758-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77758-71-5 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 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77758-71:
(7*7)+(6*7)+(5*7)+(4*5)+(3*8)+(2*7)+(1*1)=185
185 % 10 = 5
So 77758-71-5 is a valid CAS Registry Number.