334518-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 334518-81-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,4,5,1 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 334518-81:
(8*3)+(7*3)+(6*4)+(5*5)+(4*1)+(3*8)+(2*8)+(1*1)=139
139 % 10 = 9
So 334518-81-9 is a valid CAS Registry Number.