81706-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81706-70-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,0 and 6 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81706-70:
(7*8)+(6*1)+(5*7)+(4*0)+(3*6)+(2*7)+(1*0)=129
129 % 10 = 9
So 81706-70-9 is a valid CAS Registry Number.