1911-98-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1911-98-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,1 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1911-98:
(6*1)+(5*9)+(4*1)+(3*1)+(2*9)+(1*8)=84
84 % 10 = 4
So 1911-98-4 is a valid CAS Registry Number.