20768-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20768-99-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,6 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20768-99:
(7*2)+(6*0)+(5*7)+(4*6)+(3*8)+(2*9)+(1*9)=124
124 % 10 = 4
So 20768-99-4 is a valid CAS Registry Number.