220780-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220780-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,7,8 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 220780-49:
(8*2)+(7*2)+(6*0)+(5*7)+(4*8)+(3*0)+(2*4)+(1*9)=114
114 % 10 = 4
So 220780-49-4 is a valid CAS Registry Number.