22744-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22744-34-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,4 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 22744-34:
(7*2)+(6*2)+(5*7)+(4*4)+(3*4)+(2*3)+(1*4)=99
99 % 10 = 9
So 22744-34-9 is a valid CAS Registry Number.