744-98-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 744-98-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,4 and 4 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 744-98:
(5*7)+(4*4)+(3*4)+(2*9)+(1*8)=89
89 % 10 = 9
So 744-98-9 is a valid CAS Registry Number.