1380390-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1380390-20-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,0,3,9 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1380390-20:
(9*1)+(8*3)+(7*8)+(6*0)+(5*3)+(4*9)+(3*0)+(2*2)+(1*0)=144
144 % 10 = 4
So 1380390-20-4 is a valid CAS Registry Number.