20837-38-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20837-38-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,3 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20837-38:
(7*2)+(6*0)+(5*8)+(4*3)+(3*7)+(2*3)+(1*8)=101
101 % 10 = 1
So 20837-38-1 is a valid CAS Registry Number.