206444-77-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 206444-77-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,4,4 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 206444-77:
(8*2)+(7*0)+(6*6)+(5*4)+(4*4)+(3*4)+(2*7)+(1*7)=121
121 % 10 = 1
So 206444-77-1 is a valid CAS Registry Number.