337309-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 337309-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,7,3,0 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 337309-18:
(8*3)+(7*3)+(6*7)+(5*3)+(4*0)+(3*9)+(2*1)+(1*8)=139
139 % 10 = 9
So 337309-18-9 is a valid CAS Registry Number.