78159-81-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78159-81-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,1,5 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 78159-81:
(7*7)+(6*8)+(5*1)+(4*5)+(3*9)+(2*8)+(1*1)=166
166 % 10 = 6
So 78159-81-6 is a valid CAS Registry Number.