77702-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77702-18-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,0 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77702-18:
(7*7)+(6*7)+(5*7)+(4*0)+(3*2)+(2*1)+(1*8)=142
142 % 10 = 2
So 77702-18-2 is a valid CAS Registry Number.