81678-26-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81678-26-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,7 and 8 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81678-26:
(7*8)+(6*1)+(5*6)+(4*7)+(3*8)+(2*2)+(1*6)=154
154 % 10 = 4
So 81678-26-4 is a valid CAS Registry Number.