81956-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81956-70-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,5 and 6 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81956-70:
(7*8)+(6*1)+(5*9)+(4*5)+(3*6)+(2*7)+(1*0)=159
159 % 10 = 9
So 81956-70-9 is a valid CAS Registry Number.