20949-90-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20949-90-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,4 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20949-90:
(7*2)+(6*0)+(5*9)+(4*4)+(3*9)+(2*9)+(1*0)=120
120 % 10 = 0
So 20949-90-0 is a valid CAS Registry Number.