814920-17-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 814920-17-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,4,9,2 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 814920-17:
(8*8)+(7*1)+(6*4)+(5*9)+(4*2)+(3*0)+(2*1)+(1*7)=157
157 % 10 = 7
So 814920-17-7 is a valid CAS Registry Number.