219780-73-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219780-73-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,7,8 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 219780-73:
(8*2)+(7*1)+(6*9)+(5*7)+(4*8)+(3*0)+(2*7)+(1*3)=161
161 % 10 = 1
So 219780-73-1 is a valid CAS Registry Number.