1820741-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1820741-40-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,2,0,7,4 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1820741-40:
(9*1)+(8*8)+(7*2)+(6*0)+(5*7)+(4*4)+(3*1)+(2*4)+(1*0)=149
149 % 10 = 9
So 1820741-40-9 is a valid CAS Registry Number.