4983-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4983-91-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,8 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4983-91:
(6*4)+(5*9)+(4*8)+(3*3)+(2*9)+(1*1)=129
129 % 10 = 9
So 4983-91-9 is a valid CAS Registry Number.