423744-60-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 423744-60-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,3,7,4 and 4 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 423744-60:
(8*4)+(7*2)+(6*3)+(5*7)+(4*4)+(3*4)+(2*6)+(1*0)=139
139 % 10 = 9
So 423744-60-9 is a valid CAS Registry Number.