903090-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 903090-81-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,3,0,9 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 903090-81:
(8*9)+(7*0)+(6*3)+(5*0)+(4*9)+(3*0)+(2*8)+(1*1)=143
143 % 10 = 3
So 903090-81-3 is a valid CAS Registry Number.