338744-56-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 338744-56-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,8,7,4 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 338744-56:
(8*3)+(7*3)+(6*8)+(5*7)+(4*4)+(3*4)+(2*5)+(1*6)=172
172 % 10 = 2
So 338744-56-2 is a valid CAS Registry Number.