1299-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1299-84-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,9 and 9 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1299-84:
(6*1)+(5*2)+(4*9)+(3*9)+(2*8)+(1*4)=99
99 % 10 = 9
So 1299-84-9 is a valid CAS Registry Number.