770691-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 770691-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,0,6,9 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 770691-87:
(8*7)+(7*7)+(6*0)+(5*6)+(4*9)+(3*1)+(2*8)+(1*7)=197
197 % 10 = 7
So 770691-87-7 is a valid CAS Registry Number.