81506-19-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81506-19-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,0 and 6 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81506-19:
(7*8)+(6*1)+(5*5)+(4*0)+(3*6)+(2*1)+(1*9)=116
116 % 10 = 6
So 81506-19-6 is a valid CAS Registry Number.